Abstract

INZUNZA CAZARES, Santiago. Bivariate Data Analysis in an Environment Based on the use of Applets and Dynamic Software. Educ. mat. [online]. 2016, vol.28, n.3, pp.61-90.  Epub Apr 08, 2022. ISSN 2448-8089.  https://doi.org/10.24844/em2803.03.

Results are reported of a study on bivariate data analysis, with 34 university students, while taking an introductory statistics course, in which a computer environment integrated by applets and dynamic software data analysis were used, are reported. In the diagnostic evaluation, the students exhibited low level of intuitive reasoning about the covariation in scatter plots, but in the final activity, after using the computer environment, they successfully identified the direction of the relationship between the variables and developed a good sense of the strength of the relationship and correlation coefficient. However, the interpretation of the coefficients of the regression equation and the coefficient of determination were a complicated task for the students. The strategies used in the data analysis privileged the use of graphical and visual representations, instead of symbolic representations of calculation, as result of the dynamic visualization power of the technological tools used.

Keywords : Bivariate data; covariational reasoning; digital technologies.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )