Question: Find the mean and standard deviation of the times and icicle lengths for the data on Run 8903 in Table 2.4 (page 100). Find the correlation between the two variables. Use these ?ve numbers to ?nd the equation of the regression line for predicting length from time. Verify that your result agrees with that in Exercise 2.69. Use the same ?ve numbers to ?nd the equation of the regression line for predicting the time an icicle has been growing from its length. What units does the slope of each of these lines have?