Below are four bi variate data sets and the scatter plot for each. (Note that each scatter plot is displayed on the same scale.) Each data set is made up

of sample values drawn from a population. Answer the following questions about the relationships between pairs of variables and the values of 7, the sample correlation coefficient. The same response maybe the correct answer for more than one question. X, Y Data Set U, V Data Set W, T Data Set M, N Data Set None of the data sets