Estimating r For each of the following, estimate the value of the linear correlation coefficient r for the given paired data obtained from 50 randomly selected adults. a. Their heights are measured in inches (x) and those same heights are recorded in centimeters (y). b. Their IQ scores (x) are measured and their heights (y) are measured in centimeters. c. Their pulse rates (x) are measured and their IQ scores are measured (y). d. Their heights (x) are measured in centimeters and those same heights are listed again, but with negative signs (y) preceding each of these second listings