Academic literature on the topic 'Coefficient r de Pearson'

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Journal articles on the topic "Coefficient r de Pearson"

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Cernovsky, Zack Z. "A Frequent Misunderstanding Associated with Point Biserial and Phi Coefficients." Psychological Reports 90, no. 1 (2002): 65–66. http://dx.doi.org/10.2466/pr0.2002.90.1.65.

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The label “Pearson r” is legitimately used both for the standard Pearson r calculated on continuous variables and for its other varieties in the form of the point biserial or the phi coefficient. This fact is often ignored by psychologists and psychiatrists.
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Popa, Cosmin Octavian, and Adrian Rus. "The Correlation Between Personality Dimensions and Young People's Choice of a Medical Career." Acta Medica Marisiensis 62, no. 4 (2016): 395–99. http://dx.doi.org/10.1515/amma-2016-0052.

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AbstractObjective: The research assumes that there is a correlation between personality dimensions Extraversion and Conscientiousness which mean autonomy, ambition and consistency of purpose, self-efficacy and determination for young people who want to aspire to a medical career.Methods: In this study’s target group were included 130 students aspiring to a medical career, that participated in the summer school organized by UMF Tirgu-Mures in 2016, of which 25 (19%) male and 106 (81%) female, average overall age group being 17.23.Results: Within the female group, the Pearson cross-correlation c
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Wang, X., B. Jiang, and J. S. Liu. "Generalized R-squared for detecting dependence." Biometrika 104, no. 1 (2017): 129–39. http://dx.doi.org/10.1093/biomet/asw071.

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SUMMARY Detecting dependence between two random variables is a fundamental problem. Although the Pearson correlation coefficient is effective for capturing linear dependence, it can be entirely powerless for detecting nonlinear and/or heteroscedastic patterns. We introduce a new measure, G-squared, to test whether two univariate random variables are independent and to measure the strength of their relationship. The G-squared statistic is almost identical to the square of the Pearson correlation coefficient, R-squared, for linear relationships with constant error variance, and has the intuitive
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Ferraro, Mark, Jennifer Hogan Demaio, Jennifer Krol, et al. "Assessing the Motor Status Score: A Scale for the Evaluation of Upper Limb Motor Outcomes in Patients after Stroke." Neurorehabilitation and Neural Repair 16, no. 3 (2002): 283–89. http://dx.doi.org/10.1177/154596830201600306.

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The Motor Status Scale (MSS) measures shoulder, elbow (maximum score = 40), wrist, hand, and finger movements (maximum score = 42), and expands the measurement of upper extremity impairment and disability provided by the Fugl-Meyer (FM) score. This work examines the interrater reliability and criterion validity of the MSS performed in patients admitted to a rehabilitation hospital 21 ± 4 days after stroke. Using the MSS and the FM, 7 occupational therapists masked to each other’s judgments, evaluated 12 consecutive patients with stroke. Two therapists evaluated 6 additional patients on consecu
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Lee, Juhyun, Andrew Phan, and Jing Gao. "Multiparametric Ultrasound to Assess Adult Carotid Arteries." Journal for Vascular Ultrasound 44, no. 3 (2020): 144–49. http://dx.doi.org/10.1177/1544316720927879.

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The aim of the study was to assess the value of multiparametric ultrasound in atherosclerotic cardiovascular disease risk screening of the carotid artery. We performed ultrasonography of carotid arteries in 96 adults in 3 age groups: senior (age ≥65 years, n = 44), middle age (age 45-64 years, n = 31), and young adults (age 20-44 years, n = 21). The senior group was then divided into subgroups: athletes (n = 21) and non-athletes (n = 23). Ultrasound parameters included carotid intima-media thickness, distensibility coefficient, and presence of plaque(s). Statistical analyses included one-way a
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Kader, Gary, and Christine Franklin. "The Evolution of Pearson's Correlation Coefficient." Mathematics Teacher 102, no. 4 (2008): 292–99. http://dx.doi.org/10.5951/mt.102.4.0292.

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Studying the relationship between two quantitative variables is a standard topic in statistics. In high school and introductory college-level statistics, Pearson's correlation coefficient, r, is typically included as a measure of the direction and strength of the linear relationship between two quantitative variables. This article describes an activity that aids an intuitive development of the formula for r and its interpretation. Exploring scatter plots allows students to develop an intermediate measure of association called the quadrant count ratio (QCR), investigate properties of the QCR, a
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Kader, Gary, and Christine Franklin. "The Evolution of Pearson's Correlation Coefficient." Mathematics Teacher 102, no. 4 (2008): 292–99. http://dx.doi.org/10.5951/mt.102.4.0292.

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Studying the relationship between two quantitative variables is a standard topic in statistics. In high school and introductory college-level statistics, Pearson's correlation coefficient, r, is typically included as a measure of the direction and strength of the linear relationship between two quantitative variables. This article describes an activity that aids an intuitive development of the formula for r and its interpretation. Exploring scatter plots allows students to develop an intermediate measure of association called the quadrant count ratio (QCR), investigate properties of the QCR, a
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Olufikayo, Aderinlewo, and Ata Grace. "Risk perception factors and their influence on road transportation." Journal of Transport Literature 8, no. 2 (2014): 100–112. http://dx.doi.org/10.1590/s2238-10312014000200005.

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This study assesses risk in road transportation in Ekiti State, Nigeria through a number of factors as well as the various ways by which these factors are perceived through Pearson correlation analysis. Six roads were identified as case studies from which information about how the users perceived risk was obtained mainly by administering questionnaires. The responses to the 23 questions which were developed based on the risk factors were analyzed statistically to obtain their relationships in terms of their correlation coefficients and R-squared values. The most dominant risk factors with resp
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Starc, A., M. Perat, B. Poljšak, and R. Dahmane. "Female Sexual Function and Dysfunction: National Prevalence Study in Slovenia." Klinička psihologija 9, no. 1 (2016): 63. http://dx.doi.org/10.21465/2016-kp-op-0040.

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Objective: The aim of this study was to determine the prevalence of female sexual function/dysfunction in Slovenia. The study began in June 2015 and was completed in December 2015. Design and Method: In relation to the national prevalence study, we received a letter of permission from the Republic of Slovenia National Medical Ethical Committee – NMEC. The validated questionnaire was used. All participants completed self-report measures that assessed demographic variables and six major dimensions of female sexual function (desire, subjective arousal, lubrication, orgasm, satisfaction, and pain)
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MASCARENHAS, Jean Márcia Oliveira, Rita de Cássia Ribeiro SILVA, Maria Ester Pereira Conceição MACHADO, Carlos Antonio de Souza Teles SANTOS, Dirce Maria Lobo MARCHIONI, and Maurício Lima BARRETO. "Validation of a food frequency questionnaire designed for adolescents in Salvador, Bahia, Brazil." Revista de Nutrição 29, no. 2 (2016): 163–71. http://dx.doi.org/10.1590/1678-98652016000200002.

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Objective: This study assessed the validity of a Food Frequency Questionnaire used to assess food intake in adolescents in Salvador, Bahia, Brazil. Methods: Seventy adolescents enrolled in public schools aged 11 to 17 years participated in this study. The dietary intake of the adolescents was assessed using the Food Frequency Questionnaire and the mean value of three-day food record, used as the reference method. The mean (and standard deviation) energy and nutrient intakes estimated from the Food Frequency Questionnaire and food records were calculated. The paired Student's t test was used to
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Dissertations / Theses on the topic "Coefficient r de Pearson"

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Lima, Leonardo da Silva e. "Centralidades em redes espaciais urbanas e localização de atividades econômicas." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/122524.

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Nos últimos anos, o estudo de propriedades de redes espaciais urbanas conhecidas como centralidades, tem sido utilizado com frequência para descrever fenômenos de ordem sócio-econômica associados à forma da cidade. Autores têm sugerido que centralidades são capazes de descrever a estrutura espacial urbana (KRAFTA, 1994; ANAS et al., 1998) e, portanto através do estudo de centralidades, é possível reconhecer os espaços que mais concentram fluxos, os que possuem os maiores valores de renda da terra, os mais seguros, entre outros aspectos que parecem estar diretamente relacionados com o fenômeno
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Le, Trang Thi, Doan Dang Phan, Bao Dang Khoa Huynh, Van Tho Le, and Van Tu Nguyen. "Phytoplankton diversity and its relation to the physicochemical parameters in main water bodies of Vinh Long province, Vietnam." Technische Universität Dresden, 2019. https://tud.qucosa.de/id/qucosa%3A70829.

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Phytoplankton samples were collected in 2016 during the dry and rainy seasons at nine sampling sites in Vinh Long province, Vietnam. Some basic environment parameters such as temperature, pH, dissolved oxygen, nitrate and phosphate were measured and a total of 209 phytoplankton species (six phyla, 96 genera) were identified. The phylum that had the greatest number of species was Bacillariophyta (82 species), followed by Chlorophyta (61 species), Cyanophyta (39 species), Euglenophyta (21 species), Chrysophyta (three species) and Dinophyta (three3 species). The phytoplankton density ranged from
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Öberg, Elin. "L’influence de l’âge de début d’acquisition et de l’input linguistique sur l’apprentissage du FLE : Une étude empirique d’étudiants suédois du lycée et de l’université au niveau A2." Thesis, Stockholms universitet, Romanska och klassiska institutionen, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-196563.

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In the light of recent findings regarding age and cumulative language exposure in the domain of Second Language Acquisition, the present study examines how starting age and linguistic input influences Swedish learners of French in a formal instructional setting. In contrast to natural settings, research suggests that a younger starting age in formal settings does not result in more advanced long-term competences in the target language. For the benefits associated with a younger age to be triggered, significant amounts of rich linguistic input need to be obtained by the learner on a daily basis
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Kalaitzis, Angelos. "Bitcoin - Monero analysis: Pearson and Spearman correlation coefficients of cryptocurrencies." Thesis, Mälardalens högskola, Akademin för utbildning, kultur och kommunikation, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-41402.

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In this thesis, an analysis of Bitcoin, Monero price and volatility is conducted with respect to S&P500 and the VIX index. Moreover using Python, we computed correlation coefficients of nine cryptocurrencies with two different approaches: Pearson and Spearman from July 2016 -July 2018. Moreover the Pearson correlation coefficient was computed for each year from July2016 - July 2017 - July 2018. It has been concluded that in 2016 the correlation between the selected cryptocurrencies was very weak - almost none, but in 2017 the correlation increased and became moderate positive. In 2018, alm
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Lerner, Stephen 1966. "Toronto's Pearson International Airport : airport commercializationprivatization." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20156.

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Government ownership of airports is inefficient and has led to large financial deficits in Canada. Terminals I and 11 at Pearson Airport are in desperate need of redevelopment. The Pearson Airport Agreements between the Federal Government and the Pearson Development Corporation ("PDC") to redevelop and operate Terminals I and II at Pearson Airport pursuant to a long term lease would have benefitted the Government through the receipt of the proceeds from the sale of the airports while being relieved of the burden of financing airport expansion. The cancellation of the Pearson Airport Agreements
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Bergamaschi, Denise Pimentel. "Correlação intraclasse de Pearson para pares repetidos: comparação entre dois estimadores." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/6/6132/tde-01102014-105050/.

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Objetivo. Comparar, teórica e empiricamente, dois estimadores do coeficiente de correlação intraclasse momento-produto de Pearson para pares repetidos Pi. O primeiro é o estimador \"natural\", obtido mediante a correlação momento-produto de Pearson para membros de uma mesma classe (rI) e o segundo, obtido como função de componentes de variância (icc). Métodos. Comparação teórica e empírica dos parâmetros e estimadores. A comparação teórica envolve duas definições do coeficiente de correlação intraclasse PI como medida de confiabilidade (*), para o caso de duas réplicas, assim como uma apresent
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Chabot, Martin. "Le Bootstrap comme méthode d'estimation du r de Pearson, une étude Monte Carlo." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq25286.pdf.

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Truong, Thi Kim Tien. "Grandes déviations précises pour des statistiques de test." Thesis, Orléans, 2018. http://www.theses.fr/2018ORLE2057/document.

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Cette thèse concerne l’étude de grandes déviations précises pour deux statistiques de test:le coefficient de corrélation empirique de Pearson et la statistique de Moran.Les deux premiers chapitres sont consacrés à des rappels sur les grandes déviations précises et sur la méthode de Laplace qui seront utilisés par la suite. Par la suite, nous étudions les grandes déviations précises pour des coefficients de Pearson empiriques qui sont définis par:$r_n=\sum_{i=1}^n(X_i-\bar X_n)(Y_i-\bar Y_n)/\sqrt{\sum_{i=1}(X_i-\bar X_n)^2 \sum_{i=1}(Y_i-\bar Y_n)^2}$ ou, quand les espérances sont connues, $\t
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Okada, Yoshio 1928. "The thermal expansion coefficient of polypropylene and related composites /." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56778.

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The variability of thermal expansion coefficients during the molding of plastics causes the development of frozen thermal stresses in the molded parts. Also, the distribution of thermal expansion coefficients of the material in the molded part plays an important role in controlling shrinkage and warpage. In turn, the distribution of linear thermal expansion coefficients (LTECs) depends on the distributions of crystallinity and orientation in the part. In the case of fibre reinforced polymers, the distributions of fibre concentration and orientation are also important.<br>In this project, a mod
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Johansson, Emilia. "Factors controlling the sorption of Cs, Ni and U in soil : A statistical analysis with experimental sorption data of caesium, nickel and uranium in soils from the Laxemar area." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-281938.

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In the fall of 2006, soils from three small valleys in the Laxemar/Oskarshamn area were sampled. A total of eight composite samples were characterized for a number of soil parameters that are important for geochemical sorption and were later also used in batch sorption experiments. Solid/liquid partition coefficients (Kd values) were then determined for seven radionuclides in each of the eight samples. To contribute to the interpretation of the sorption results together with the soil characterizations, this study aims to describe the sorption behavior of the radionuclides caesium, nickel and u
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Books on the topic "Coefficient r de Pearson"

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Shi, Feng. Learn About Assortativity Coefficient in R With Data From UK Faculty Dataset (2008). SAGE Publications, Ltd., 2019. http://dx.doi.org/10.4135/9781526487568.

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Scott Jones, Julie. Learn to Use the Eta Coefficient Test in R With Data From the NIOSH Quality of Worklife Survey (2014). SAGE Publications, Ltd., 2019. http://dx.doi.org/10.4135/9781526495433.

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Scott Jones, Julie. Learn to Use Cronbach’s Coefficient Alpha Test in R With Data From the British Crime Survey (Unrestricted Teaching Dataset) (2007–08). SAGE Publications, Ltd., 2019. http://dx.doi.org/10.4135/9781526497055.

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Scott Jones, Julie. Learn to Use the Phi Coefficient Measure and Test in R With Data From the Welsh Health Survey (Teaching Dataset) (2009). SAGE Publications, Ltd., 2019. http://dx.doi.org/10.4135/9781526498236.

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Finance, United States Congress Senate Committee on. Nominations of Joseph Robert Goeke, Glen L. Bower, Daniel Pearson, Charlotte R. Lane, and Raymond T. Wagner: Hearing before the Committee on Finance, United States Senate, One Hundred Eighth Congress, first session, on the nominations of Joseph Robert Goeke, to be a judge of the U.S. Tax Court; Glen L. Bower, to be a judge of the U.S. Tax Court; Daniel Pearson, to be a member of the U.S. International Trade Commission; Charlotte R. Lane, to be a member of the U.S. International Trade Commission; and Raymond T. Wagner, Jr., to be a member of the Department of the Treasury Oversight Board, February 12, 2003. U.S. G.P.O., 2003.

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Streiner, David L., Geoffrey R. Norman, and John Cairney. Reliability. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199685219.003.0008.

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This chapter reviews the basic theory of reliability, and examines the relation between reliability and measurement error. It derives the standard form of reliability, the intraclass correlation or ICC, from repeated measures ANOVA. The chapter explores issues in the application of the reliability coefficient, including absolute versus relative reliability, the reliability of multiple observations, and the standard error of measurement. It examines several other measures of reliability—Cohen’s kappa, Pearson r, and the method of Altman and Bland—and derives the relation between them and the IC
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MasteringPhysics(R) with Pearson EText -- Standalone Access Card -- for Conceptual Integrated Science. Pearson Education Canada, 2018.

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Hewitt, Paul G. NEW MasteringPhysics(R) with Pearson EText -- Standalone Access Card -- for Conceptual Physics, Global Edition. Pearson Education, Limited, 2014.

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NEW MasteringAstronomy(R) with Pearson EText -- Standalone Access Card -- for Astronomy Today, Global Edition. Pearson Education, Limited, 2014.

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Porter, Stuart R. Finite Math: Custom Textbook for Math 120, for Monroe College, by Pearson. Taking From a Survey of Mathematics with Application, Sixth Edition by Allen R. Angel and Stuart R. Porter. (Monroe College.). Pearson Custom Publishing, 2001.

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Book chapters on the topic "Coefficient r de Pearson"

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Yockey, Ronald D. "The Pearson r Correlation Coefficient." In SPSS® Demystified. Routledge, 2018. http://dx.doi.org/10.4324/9781315268545-14.

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Patten, Mildred L., and Michelle Newhart. "The Pearson Correlation Coefficient (r)." In Understanding Research Methods. Routledge, 2017. http://dx.doi.org/10.4324/9781315213033-75.

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Gooch, Jan W. "Pearson Correlation Coefficient." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_15317.

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Benesty, Jacob, Jingdong Chen, Yiteng Huang, and Israel Cohen. "Pearson Correlation Coefficient." In Noise Reduction in Speech Processing. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-00296-0_5.

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Wang, Jiguang. "Pearson Correlation Coefficient." In Encyclopedia of Systems Biology. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-9863-7_372.

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Nahler, Gerhard. "Pearson correlation coefficient." In Dictionary of Pharmaceutical Medicine. Springer Vienna, 2009. http://dx.doi.org/10.1007/978-3-211-89836-9_1025.

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Brysbaert, Marc. "Improving predictions through the Pearson correlation coefficient." In Basic Statistics for Psychologists. Macmillan Education UK, 2011. http://dx.doi.org/10.1007/978-0-230-34592-8_11.

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Koyama, Nicola. "R = Coefficient of Relatedness." In Encyclopedia of Evolutionary Psychological Science. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-16999-6_1479-1.

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Koyama, Nicola F. "R = Coefficient of Relatedness." In Encyclopedia of Evolutionary Psychological Science. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-319-19650-3_1479.

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Saidi, Rania, Waad Bouaguel, and Nadia Essoussi. "Hybrid Feature Selection Method Based on the Genetic Algorithm and Pearson Correlation Coefficient." In Machine Learning Paradigms: Theory and Application. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-02357-7_1.

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Conference papers on the topic "Coefficient r de Pearson"

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Liu, Jing, Yong Zhang, and Qinjun Zhao. "Adaptive ViBe Algorithm Based on Pearson Correlation Coefficient." In 2019 Chinese Automation Congress (CAC). IEEE, 2019. http://dx.doi.org/10.1109/cac48633.2019.8997209.

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Liu, Jing, Yong Zhang, and Qinjun Zhao. "Video stabilization algorithm based on Pearson correlation coefficient." In 2019 International Conference on Advanced Mechatronic Systems (ICAMechS). IEEE, 2019. http://dx.doi.org/10.1109/icamechs.2019.8861649.

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Vijapur, Nataraj A., and R. Srinivasa Rao Kunte. "Glaucoma detection by using Pearson-R correlation filter." In 2015 International Conference on Communications and Signal Processing (ICCSP). IEEE, 2015. http://dx.doi.org/10.1109/iccsp.2015.7322695.

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Zhang, Fie, Weitao Zhou, Lili Sun, Xiaochuan Lin, Hongjie Liu, and Zhimin He. "Improvement of Pearson similarity coefficient based on item frequency." In 2017 International Conference on Wavelet Analysis and Pattern Recognition (ICWAPR). IEEE, 2017. http://dx.doi.org/10.1109/icwapr.2017.8076697.

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Mujahid, Adnan K. R., and Chandrasegar Thirumalai. "Pearson Correlation Coefficient Analysis (PCCA) on Adenoma carcinoma cancer." In 2017 International Conference on Trends in Electronics and Informatics (ICOEI). IEEE, 2017. http://dx.doi.org/10.1109/icoei.2017.8300976.

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"Fuzzy-weighted Pearson Correlation Coefficient for Collaborative Recommender Systems." In 15th International Conference on Enterprise Information Systems. SciTePress - Science and and Technology Publications, 2013. http://dx.doi.org/10.5220/0004412404090414.

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Logoglu, K. Berker, and Tugrul K. Ates. "Speeding-up Pearson Correlation Coefficient calculation on graphical processing units." In 2010 IEEE 18th Signal Processing and Communications Applications Conference (SIU). IEEE, 2010. http://dx.doi.org/10.1109/siu.2010.5654411.

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Reggiani, Enrico, Eleonora D'Arnese, Andrea Purgato, and Marco D. Santambrogio. "Pearson Correlation Coefficient Acceleration for Modeling and Mapping of Neural Interconnections." In 2017 IEEE International Parallel and Distributed Processing Symposium: Workshops (IPDPSW). IEEE, 2017. http://dx.doi.org/10.1109/ipdpsw.2017.63.

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Rawal, Keerti, and Aijaz Ahmad. "Feature Selection for Electrical Demand Forecasting and Analysis of Pearson Coefficient." In 2021 IEEE 4th International Electrical and Energy Conference (CIEEC). IEEE, 2021. http://dx.doi.org/10.1109/cieec50170.2021.9510614.

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Pathak, Soumi. "Changing trends in coagulation profile of 30 patients undergoing CRS with HIPEC in the peri-operative period." In 16th Annual International Conference RGCON. Thieme Medical and Scientific Publishers Private Ltd., 2016. http://dx.doi.org/10.1055/s-0039-1685386.

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Background: With advent of surgical advancements like HIPEC several unstudied pathophysiological aspects need to be evaluated. We studied the trends in coagulation profile in patients undergoing CRS with HIPEC in the peri-operative period, utilizing Thromboelastography (TEG) in comparison with standard coagulation tests. The utility of TEG as a guide for transfusion of blood products was also evaluated. Materials and Methods: It was a Prospective observational Cohort study which included 30 consecutive patients undergoing CRS with HIPEC at RGCI in 2015. Methodology: Preoperatively standard coa
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Reports on the topic "Coefficient r de Pearson"

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Duvvuri, Sarvani, and Srinivas S. Pulugurtha. Researching Relationships between Truck Travel Time Performance Measures and On-Network and Off-Network Characteristics. Mineta Transportation Institute, 2021. http://dx.doi.org/10.31979/mti.2021.1946.

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Trucks serve significant amount of freight tonnage and are more susceptible to complex interactions with other vehicles in a traffic stream. While traffic congestion continues to be a significant ‘highway’ problem, delays in truck travel result in loss of revenue to the trucking companies. There is a significant research on the traffic congestion mitigation, but a very few studies focused on data exclusive to trucks. This research is aimed at a regional-level analysis of truck travel time data to identify roads for improving mobility and reducing congestion for truck traffic. The objectives of
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