What does r2 measure Question 1Select one: a. The proportion of variation in one variable that is explained by the other b. The proportion of error variation c. The proportion of variation in Y related to the variation of the categories of X d. The proportion of variation in Y due to the variation within each of the categories of X e. The significance of the relationship between X and YWhich of the following is a measure of non-metric correlation? Question 2Select one: a. Pearson product moment correlation b. Bivariate linear regression c. Kendall's tau d. Partial correlation e. All of the above