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Academic literature on the topic 'ANOVA test of Welch'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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Journal articles on the topic "ANOVA test of Welch"

1

Karagoz, Derya. "Modified Welch Test Statistic for ANOVA under Weibull Distribution." Hacettepe Journal of Mathematics and Statistics 45, no. 56 (2015): 1. http://dx.doi.org/10.15672/hjms.2015569632.

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Harwell, Michael R., Elaine N. Rubinstein, William S. Hayes, and Corley C. Olds. "Summarizing Monte Carlo Results in Methodological Research: The One- and Two-Factor Fixed Effects ANOVA Cases." Journal of Educational Statistics 17, no. 4 (1992): 315–39. http://dx.doi.org/10.3102/10769986017004315.

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Meta-analytic methods were used to integrate the findings of a sample of Monte Carlo studies of the robustness of the F test in the one- and two-factor fixed effects ANOVA models. Monte Carlo results for the Welch (1947) and Kruskal-Wallis (Kruskal & Wallis, 1952) tests were also analyzed. The meta-analytic results provided strong support for the robustness of the Type I error rate of the F test when certain assumptions were violated. The F test also showed excellent power properties. However, the Type I error rate of the F test was sensitive to unequal variances, even when sample sizes we

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Chen, Dechang, Zhenqiu Liu, Xiaobin Ma, and Dong Hua. "Selecting Genes by Test Statistics." Journal of Biomedicine and Biotechnology 2005, no. 2 (2005): 132–38. http://dx.doi.org/10.1155/jbb.2005.132.

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Gene selection is an important issue in analyzing multiclass microarray data. Among many proposed selection methods, the traditional ANOVA F test statistic has been employed to identify informative genes for both class prediction (classification) and discovery problems. However, the F test statistic assumes an equal variance. This assumption may not be realistic for gene expression data. This paper explores other alternative test statistics which can handle heterogeneity of the variances. We study five such test statistics, which include Brown-Forsythe test statistic and Welch test statistic.

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Srikanth, Akondi, Rubeena S K, and Aswani D. "Examining the Qualities of an Entrepreneur: A Selective Study." Journal of Management and Science 1, no. 4 (2015): 289–95. http://dx.doi.org/10.26524/jms.2015.24.

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With the thought of identifying the opinion of post graduate aspirants on the Qualities of an entrepreneur, the paper has conducted an empirical research. To achieve this objective, suitable research design is applied on a sample of 63 of 90 using simple random sampling. After testing normality by Shapiro test, one sample t-test, Welch two sample t-test and ANOVA are used for analyzing the effect of Gender, Age and Education Qualification respectively on the opinion of respondents towards the qualities of an entrepreneur, using R 3.2.1 version. Respondents opine that all 22 Entrepreneurial qua

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Witchayangkoon, Boonsap, Kamon Budsaba, Saharat Buddhawanna, Sayan Sirimontree, and Krittiya Lertpocasombut. "Statistical Analysis on Satisfaction of Residents Living in Prefabricated Concrete Buildings in Thailand." Advanced Materials Research 931-932 (May 2014): 520–24. http://dx.doi.org/10.4028/www.scientific.net/amr.931-932.520.

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Sample survey has been conducted to evaluate satisfaction of residents living in prefabricated concrete buildings (dormitories, detached houses, and townhouses) in Thailand. Nine criteria have been determined including moisture protection, noise prevention, safety of structures, thermal prevention, air flow, external appearance, interior, facility, and overall satisfaction. The t-test indicates that the satisfaction score mean between males and females for each criterion is not significantly different. The Levenes test shows that our survey data do not follow homogeneity of variance assumption

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Ochuko, Tobi Kingsley, Suhaida Abdullah, Zakiyah Zain, and Sharipah Syed Soaad Yahaya. "Winsorized Modified One Step M-Estimator As a Measure of the Central Tendency in the Alexander-Govern Test." ComTech: Computer, Mathematics and Engineering Applications 7, no. 3 (2016): 233. http://dx.doi.org/10.21512/comtech.v7i3.2505.

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This research dealt with making comparison of the independent group tests with the use of parametric technique. This test used mean as its central tendency measure. It was a better alternative to the ANOVA, the Welch test and the James test, because it gave a good control of Type I error rates and high power with ease in its calculation, for variance heterogeneity under a normal data. But the test was found not to be robust to non-normal data. Trimmed mean was used on the test as its central tendency measure under non-normality for two group condition, but as the number of groups increased abo

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Kingsley Ochuko, Tobi, Suhaida Abdullah, Zakiyah Binti Zain, and Sharipah Soaad Syed Yahaya. "Winsorized Modified One Step M-estimator in Alexander-Govern Test." Modern Applied Science 9, no. 11 (2015): 51. http://dx.doi.org/10.5539/mas.v9n11p51.

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This research centres on independent group test of comparing two or more means by using the parametric method, namely the Alexander-Govern test. The Alexander-Govern (<em>AG</em>) test uses mean as a measure of its central tendency. It is a better alternative to the Welch test, James test and the <em>ANOVA</em>, because it has a good control of Type I error rates and produces a high power efficient for a normal data under variance heterogeneity, but not for non-normal data. As a result, trimmed mean was applied on the test under non-normal data for two group condition,

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Ma, Lijun, Nicholette D. Palmer, Young A. Choi, et al. "APOL1 Risk Variants Impair Multiple Mitochondrial Pathways in a Metabolomics Analysis." Kidney360 1, no. 12 (2020): 1353–62. http://dx.doi.org/10.34067/kid.0003592020.

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BackgroundKidney risk variants (KRVs) in the APOL1 gene are associated with mitochondrial dysfunction. However, the molecular spectrum of metabolites affected by the G1 and G2 KRVs, and the downstream mitochondrial pathways they affect, remain unknown.MethodsWe performed a metabolomics analysis using HEK293 Tet-on cells conditionally expressing APOL1 G0, G1, and G2 KRVs to determine the patterns of metabolites and pathways potentially involved in nephropathy. The Welch two-sample t test, matched-pairs t test, and two-way repeated measures ANOVA were used to identify differential metabolites. R

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Berisha, Fahredin. "Funding Challenges of Small and Medium Enterprises in Transition Countries: Kosovo Case Study." Journal of Economics and Management Sciences 3, no. 2 (2020): p71. http://dx.doi.org/10.30560/jems.v3n2p71.

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SMEs play a very important role in the development of economies of different countries and they are now considered as a key factor of economic development. They affect unemployment, promote social welfare and can be treated as a promoter of economic growth. The paper addresses the role and importance of financing SMEs in transition countries including Kosovo. The study examines the key factors affecting the increase of SME financing from external sources, namely bank lending since other external sources of financing in Kosovo are scarce and almost non-existent. For the purposes of this paper,

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DİKMEN, Beyhan BELLER, and Ayşe Gül KÖKSAL. "MESLEK YÜKSEKOKULU ÖĞRENCİLERİNİN HİLE YAPMA EĞİLİM DÜZEYLERİNİN TESPİTİ: GİRESUN ÜNİVERSİTESİ SOSYAL BİLİMLER MESLEK YÜKSEKOKULU’NDA BİR ALAN ÇALIŞMASI." Business & Management Studies: An International Journal 7, no. 3 (2019): 221–41. http://dx.doi.org/10.15295/bmij.v7i3.1240.

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Günümüzde yönetici ve çalışanların çıkar sağlamak amacıyla kasıtlı bir şekilde davranması ve yanlış bilgiler sunması olarak ortaya çıkan hileler, önemli bir işletme sorunu haline gelmiştir. Yapılan hileler başta devlet, yatırımcılar, çalışanlar, işverenler, satıcılar, kamuoyu olmak üzere birçok kesimi etkilemekte, hatta işletmelerin varlıklarını tehdit etmektedir. Hile içeren davranışlar, işletmelerde farklı görevlerdeki yönetici ve çalışanlar tarafından gerçekleştirilmektedir. Meslek yüksekokulu öğrencileri de işletmelerde çalışacak adaylar arasında yer almaktadır. Bu çalışmanın amacı, sosyal

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Dissertations / Theses on the topic "ANOVA test of Welch"

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Liu, Hangcheng. "Comparing Welch's ANOVA, a Kruskal-Wallis test and traditional ANOVA in case of Heterogeneity of Variance." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/3985.

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Analysis of variance (ANOVA) is a robust test against the normality assumption, but it may be inappropriate when the assumption of homogeneity of variance has been violated. Welch ANOVA and the Kruskal-Wallis test (a non-parametric method) can be applicable for this case. In this study we compare the three methods in empirical type I error rate and power, when heterogeneity of variance occurs and find out which method is the most suitable with which cases including balanced/unbalanced, small/large sample size, and/or with normal/non-normal distributions.

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Kossaï, Mohamed. "Les Technologies de L’Information et des Communications (TIC), le capital humain, les changements organisationnels et la performance des PME manufacturières." Thesis, Paris 9, 2013. http://www.theses.fr/2013PA090035/document.

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Les TIC sont un facteur clé de performance dans les pays développés. Cette thèse s’intéresse à l’adoption des TIC et leur impact sur la performance des PME manufacturières d’un pays en développement. A la suite d’une première partie qui présente le cadre théorique et conceptuel, le reste de la thèse est organisé en trois études empiriques. La première étude propose une modélisation Probit afin d’identifier les déterminants d’adoption des TIC. Le capital humain est la variable explicative la plus significative. Se basant sur la régression linéaire à variables muettes, la causalité de Granger, l

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Ning, Wei. "A new approach to test for interactions in two-way ANOVA models." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2006. http://proquest.umi.com/login?COPT=REJTPTU0NWQmSU5UPTAmVkVSPTI=&clientId=3739.

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Patrick, Joshua Daniel. "Simulations to analyze Type I error and power in the ANOVA F test and nonparametric alternatives." [Pensacola, Fla.] : University of West Florida, 2009. http://purl.fcla.edu/fcla/etd/WFE0000158.

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Opoku-Nsiah, Richard. "A computationally efficient bootstrap-equivalent test for ANOVA in skewed populations with a large number of factor levels." Diss., Kansas State University, 2017. http://hdl.handle.net/2097/38155.

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Doctor of Philosophy<br>Department of Statistics<br>Haiyan Wang<br>Advances in technology easily collect a large amount of data in scientific research such as agricultural screening and micro-array experiments. We are particularly interested in data from one-way and crossed two-way designs that have a large number of treatment combinations but small replications with heteroscedastic variances. In this framework, several test statistics have been proposed in the literature. Even though the form of these proposed test statistics may be different, they all use limiting normal or chi-square distri

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Senteney, Michael H. "A Monte Carlo Study to Determine Sample Size for Multiple Comparison Procedures in ANOVA." Ohio University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou160433478343909.

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Larsson, Stefan. "Mixing Processes for Ground Improvement by Deep Mixing." Doctoral thesis, KTH, Civil and Architectural Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3667.

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<p>The thesis is dealing with mixing processes havingapplication to ground improvement by deep mixing. The mainobjectives of the thesis is to make a contribution to knowledgeof the basic mechanisms in mixing binding agents into soil andimprove the knowledge concerning factors that influence theuniformity of stabilised soil.</p><p>A great part of the work consists of a literature surveywith particular emphasis on literature on the processindustries. This review forms a basis for a profounddescription and discussion of the mixing process and factorsaffecting the process in connection with deep m

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Sahlström, Linda. "Att klättra, springa, krypa och kasta : En effektutvärdering inom området rörelseförståelse bland barn: har interventionen ”Rörelsesatsning i skolan” gett någon effekt?" Thesis, Mälardalens högskola, Akademin för hälsa, vård och välfärd, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-45321.

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Övervikt är en av de ledande folkhälsoutmaningarna i världen där cirka en tredjedel av världens befolkning är övervikta eller har fetma vilket medför negativa hälsoeffekter och sjukdomar. Övervikt och fetma drabbar även barn och unga där en kraftig ökning har skett under de senaste 40 åren. Fysisk aktivitet utgör en viktig komponent för att minska fetmaepidemin, dock förekommer även en ökad andel fysiskt inaktiva barn och unga i Sverige. Skolan ses som en bra arena för folkhälsoarbete men det förekommer dock spridd forskning gällande effekterna av interventioner som syftar att öka den fysiska

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Giosa, Francesca. "I test d'ipotesi e la loro declinazione in ambito medico." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15992/.

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Una domanda di rilevante interesse in ambito medico e in particolare nell'ambito della ricerca medica è: avendo a disposizione un certo numero di farmaci quale di questi è più efficace? E' chiaro quanto sia importante conoscere l'efficacia di un farmaco prima di somministrarlo e la statistica medica con lo strumento statistico comunemente chiamato Test d'ipotesi si occupa di rispondere a queste domande e di limitare il più possibile gli errori di valutazione che si possono commettere. Lo scopo della mia tesi è spiegare l'utilizzo dei test d'ipotesi e in particolare di analizzare il confronto t

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Widerberg, Carl. "The Two-Sample t-test and the Influence of Outliers : - A simulation study on how the type I error rate is impacted by outliers of different magnitude." Thesis, Uppsala universitet, Statistiska institutionen, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-375767.

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This study investigates how outliers of different magnitude impact the robustness of the twosample t-test. A simulation study approach is used to analyze the behavior of type I error rates when outliers are added to generated data. Outliers may distort parameter estimates such as the mean and variance and cause misleading test results. Previous research has shown that Welch’s ttest performs better than the traditional Student’s t-test when group variances are unequal. Therefore these two alternative statistics are compared in terms of type I error rates when outliers are added to the samples.

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Books on the topic "ANOVA test of Welch"

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Langer, Gloria. Test bank to accompany Elementary algebra [by] Gilbert M. Peter, C. Lee Welch. West Pub. Co, 1996.

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Sharif, Shamshuritawati, Sharipah Soaad Syed Yahaya, and Azizan Saaban. Scientific investigation on univariate quantitative methods. UUM Press, 2016. http://dx.doi.org/10.32890/9789670876757.

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The aim of this book is to deliver the reader with a book where they can discover a brief research idea in statistics and mathematics including a wide range of topics such as t-test, ANOVA, L-moment, centrality measure, Quintic Bézier Triangular Patches, and abelianess in Group Theory.The book is advisable for the readers to have some basic foundation on statistical inference and mathematical formulation prior to reading the chapters in this book.It is also suitable for researchers who want to get up to speed quickly on modern statistical and mathematical approach.

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Md Yusof, Zahayu, Sharipah Soaad Syed Yahaya, and Suhaida Abdullah. Testing on performance using robust methods. UUM Press, 2014. http://dx.doi.org/10.32890/9789670474717.

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This monograph presents the work on robust procedures when researchers faced with data that appear to violate the assumption of normality and the data with unbalanced design.A simulation method was conducted by the authors to compare the robustness (Type I error) of the method with respect to its counterpart from the parametric and non-parametric aspects namely ANOVA, t-test, Kruskal-Wallis and Mann-Whitney respectively. The performance of the methods was further demonstrated on real education data.This monograph illustrates new alternative procedures to researchers (in various fields, especia

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Raffle, Angela E., Anne Mackie, and J. A. Muir Gray. Screening. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780198805984.001.0001.

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Muir Gray, Anne Mackie and Angela Raffle have been at the forefront of achieving improvements in UK screening over recent years, and they bring a wealth of experience to this non-technical introductory guide covering all aspects of screening. As USA expert Gilbert Welch describes it, this book is “A readable yet encyclopaedic guide to screening: its history, its key design elements, its implementation and policy challenges… A must read for clinicians, managers, and policy makers who would like to assist Raffle Mackie and Gray in achieving their goal: ‘to sort out the mess’.” The first four cha

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Book chapters on the topic "ANOVA test of Welch"

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Lecoutre, Bruno, and Jacques Poitevineau. "Generalizations and Methodological Considerations for ANOVA." In The Significance Test Controversy Revisited. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-44046-9_9.

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Dormann, Carsten. "The Linear Model: t-test and ANOVA." In Environmental Data Analysis. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-55020-2_11.

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Dormann, Carsten F. "Das Lineare Modell: t-Test und ANOVA." In Parametrische Statistik. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-34786-3_11.

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Dormann, Carsten F. "Das Lineare Modell: $t$-Test und ANOVA." In Parametrische Statistik. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54684-0_11.

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Rayat, Charan Singh. "Variance-Ratio Test and Analysis of Variance (ANOVA)." In Statistical Methods in Medical Research. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0827-7_12.

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Quicke, Donald, Buntika A. Butcher, and Rachel Kruft Welton. "Analysis of variance (ANOVA)." In Practical R for biologists: an introduction. CABI, 2021. http://dx.doi.org/10.1079/9781789245349.0155.

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Abstract Analysis of variance is used to analyze the differences between group means in a sample, when the response variable is numeric (real numbers) and the explanatory variable(s) are all categorical. Each explanatory variable may have two or more factor levels, but if there is only one explanatory variable and it has only two factor levels, one should use Student's t-test and the result will be identical. Basically an ANOVA fits an intercept and slopes for one or more of the categorical explanatory variables. ANOVA is usually performed using the linear model function lm, or the more specific function aov, but there is a special function oneway.test when there is only a single explanatory variable. For a one-way ANOVA the non-parametric equivalent (if variance assumptions are not met) is the kruskal.test.

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Quicke, Donald, Buntika A. Butcher, and Rachel Kruft Welton. "Analysis of variance (ANOVA)." In Practical R for biologists: an introduction. CABI, 2021. http://dx.doi.org/10.1079/9781789245349.0013a.

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Abstract Analysis of variance is used to analyze the differences between group means in a sample, when the response variable is numeric (real numbers) and the explanatory variable(s) are all categorical. Each explanatory variable may have two or more factor levels, but if there is only one explanatory variable and it has only two factor levels, one should use Student's t-test and the result will be identical. Basically an ANOVA fits an intercept and slopes for one or more of the categorical explanatory variables. ANOVA is usually performed using the linear model function lm, or the more specific function aov, but there is a special function oneway.test when there is only a single explanatory variable. For a one-way ANOVA the non-parametric equivalent (if variance assumptions are not met) is the kruskal.test.

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Dormann, Carsten. "The Linear Model: t-test and ANOVA in R." In Environmental Data Analysis. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-55020-2_12.

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Dormann, Carsten F. "Das Lineare Modell: t-Test und ANOVA in R." In Parametrische Statistik. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-34786-3_12.

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Dormann, Carsten F. "Das Lineare Modell: $t$-Test und ANOVA in R." In Parametrische Statistik. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54684-0_12.

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Conference papers on the topic "ANOVA test of Welch"

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Campos de Almeida Lima, Igor, Marcello Montillo Provenza, Paulo Henrique Simões, Jorge Luiz de Jesus Goulart, and Vinicius Layter Xavier. "ESTATÍSTICA APLICADA: UMA INTRODUÇÃO AO TESTE DE VAN DER WAERDEN E A ANOVA COM CORREÇÃO DE WELCH." In IV Simpósio de Engenharia, Gestão e Inovação. Even3, 2021. http://dx.doi.org/10.29327/sengi2021.330596.

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Kumar, B. Jyothi, H. Naveen, B. Praveen Kumar, Sai Shyam Sharma, and Jaime Villegas. "Logistic regression for polymorphic malware detection using ANOVA F-test." In 2017 4th International Conference on Innovations in Information, Embedded and Communication Systems (ICIIECS). IEEE, 2017. http://dx.doi.org/10.1109/iciiecs.2017.8275880.

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Girisha, R., and S. Murali. "Self shadow elimination algorithm for surveillance videos using ANOVA F test." In the Third Annual ACM Bangalore Conference. ACM Press, 2010. http://dx.doi.org/10.1145/1754288.1754300.

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Egea-Roca, Daniel, Jose A. Lopez-Salcedo, Gonzalo Seco-Granados, and Wim de Wilde. "Generalized ANOVA Test for GNSS Spoofing Detection with a Dual-Polarized Antenna." In 2020 28th European Signal Processing Conference (EUSIPCO). IEEE, 2021. http://dx.doi.org/10.23919/eusipco47968.2020.9287663.

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Balta, Berna, Fazıl O¨nder So¨nmez, and Abdu¨lkadir Cengiz. "Gage Repeatability and Reproducibility Investigations of a Test Rig Using ANOVA/Xbar-R Method." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-62130.

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In an experimental study, good measurement systems are important for approaching successful decisions. The assessment of a measurement system is known as “Gage Repeatability and Reproducibility” (GR&R). “Measurement System Analysis” (MSA) should be performed at the beginning of an experimental study to ensure that the information to be collected are true representation of what is occurring in the experiment. Experimental data collected under the same condition usually show variation, which arises partly from the experimental system, partly from the measurement devices and partly from the o

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Nurrahma and Rahadian Yusuf. "Comparing Different Supervised Machine Learning Accuracy on Analyzing COVID-19 Data using ANOVA Test." In 2020 6th International Conference on Interactive Digital Media (ICIDM). IEEE, 2020. http://dx.doi.org/10.1109/icidm51048.2020.9339676.

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Özdemir, Lutfiye. "Assessment of Kyrgyzstan-Turkey Manas University Students' Entrepreneurship Orientations by Socio-Demographic Characteristics." In International Conference on Eurasian Economies. Eurasian Economists Association, 2013. http://dx.doi.org/10.36880/c04.00735.

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The purpose of this research is to determine the effects of socio-demographic characteristics on the entrepreneurship orientation. The research was carried out 581 undergraduates on the Kyrgyzstan-Turkey Manas University. The data was collected with questionnaire. Reliability of measurement tool (Cronbach’s Alpha) is 73 %. Frequency analysis, T-test, and one-way ANOVA analysis were used in research. As a result, it was found that the socio-demographic characteristics affected aggressive competitiveness, innovation, proactive behavior, risk-taking, autonomy, self-efficacy, need for achievement,

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Paksoy, Semin, and Mehmet Fatih Traş. "The Financial Risk Evaluation in Turkish Banking System." In International Conference on Eurasian Economies. Eurasian Economists Association, 2016. http://dx.doi.org/10.36880/c07.01731.

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Banking activities exhibit highly dynamic and evolving feature in recent years. Healthy financial position of the banks therefore gains importance in assuring well-being of all economic agents in a country. Because of banks’ key role in financial markets and real economy, banking failures or inefficient performances may have profound effects on the whole economy. For this reason, it is important to monitor the bank ratios as a strength indicator. Therefore, this paper aims to investigate financial position of the banks in Turkey. To this end, we select particular 29 ratios of the present day b

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Barut, Yaşar, Murat Gökalp, Mürsel Akdenk, and Agamurat Nazarov. "An Evaluation of Percepctives of Students Studing in Turkey from Turkish Republics and Relative Communities about Instructional Progams." In International Conference on Eurasian Economies. Eurasian Economists Association, 2012. http://dx.doi.org/10.36880/c03.00491.

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In this study, relative communications and Turk Republics’ students thought about instructional programs according to their sex, age, departments, marriage and nationality who attended Samsun Education Faculty In 19 May University were investigated The sample and universe of research consists 106 students who attended in different departments of Samsun Education Faculty. Data required a questionnaire developed by researcher with 5 Likert type with 20 items. Data was analyzed in terms of frequencies, percentages, t-Test, One way Anova, Post Hoch (LSD). The results of research show that there ar

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Breedlove, Evan L., Mark T. Gibson, Aaron T. Hedegaard, and Emilie L. Rexeisen. "Evaluation of Dynamic Mechanical Test Methods." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65742.

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Dynamic mechanical properties are critical in the evaluation of materials with viscoelastic behavior. Various techniques, including dynamic mechanical analysis (DMA), rheology, nanoindentation, and others have been developed for this purpose and typically report complex modulus. Each of these techniques has strengths and weaknesses depending on sample geometry and length scale, mechanical properties, and skill of the user. In many industry applications, techniques may also be blindly applied according to a standard procedure without optimization for a specific sample. This can pose challenges

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Reports on the topic "ANOVA test of Welch"

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Idakwo, Gabriel, Sundar Thangapandian, Joseph Luttrell, Zhaoxian Zhou, Chaoyang Zhang, and Ping Gong. Deep learning-based structure-activity relationship modeling for multi-category toxicity classification : a case study of 10K Tox21 chemicals with high-throughput cell-based androgen receptor bioassay data. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41302.

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Deep learning (DL) has attracted the attention of computational toxicologists as it offers a potentially greater power for in silico predictive toxicology than existing shallow learning algorithms. However, contradicting reports have been documented. To further explore the advantages of DL over shallow learning, we conducted this case study using two cell-based androgen receptor (AR) activity datasets with 10K chemicals generated from the Tox21 program. A nested double-loop cross-validation approach was adopted along with a stratified sampling strategy for partitioning chemicals of multiple AR

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Tucker-Blackmon, Angelicque. Engagement in Engineering Pathways “E-PATH” An Initiative to Retain Non-Traditional Students in Engineering Year Three Summative External Evaluation Report. Innovative Learning Center, LLC, 2020. http://dx.doi.org/10.52012/tyob9090.

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The summative external evaluation report described the program's impact on faculty and students participating in recitation sessions and active teaching professional development sessions over two years. Student persistence and retention in engineering courses continue to be a challenge in undergraduate education, especially for students underrepresented in engineering disciplines. The program's goal was to use peer-facilitated instruction in core engineering courses known to have high attrition rates to retain underrepresented students, especially women, in engineering to diversify and broaden

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