Online platform supporting teaching correlation

Article type: Research Article

Authors: Kozak, Marcin

Affiliations: Department of Experimental Design and Bioinformatics, Warsaw University of Life Sciences, Nowoursynowska 159, 02-776 Warsaw, Poland. E-mail: [email protected]

Abstract: A web platform (http://www.animation.statgrafia.pl/correlation) accompanying a previous paper (Teach Stat 31 (2009), 52–54) is described. The platform contains animations of a small simulation study based on the population presented in the above-mentioned paper, results of a similar but large simulation study based on the same population, and results of similar simulation studies based on seven 1000-element populations with various population correlation coefficients. With the platform, a teacher can explain how sample size influences bias and precision of the regular estimator of Pearson's correlation coefficient, and what in general the distribution of the correlation coefficient looks like.

Keywords: Correlation, teaching, online resources

DOI: 10.3233/MAS-2011-0160

Journal: Model Assisted Statistics and Applications, vol. 6, no. 1, pp. 71-74, 2011