Question

Suppose the correlation between study time x and test score y is given by r = .939. What does this tell us about the correlation between x and y? 0 We have 12 = .8817. What does this tell us about the connection between x and y (regression of y on x)?

Answer 1

We are given the value for the correlation coefficient between dependent variable test score (y) and independent variable study time (x) as r = 0.939, this means there is a very strong positive linear association or correlation exists between the two variables. The value of the R-square or the coefficient of determination is given as 0.8817, which means about 88.17% of the variation in the dependent variable test score is explained by the independent variable study time.