Lia and Elise are discussing measures of spread. Elise says the best measure of spread with which to compare data sets is the IQR. Lia says the best measure of spread with which to compare data sets is the standard deviation. Complete the sentences. Part A: Elise is correct if both data sets are normal such as 1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15 . Part B: Lia is correct if the data is normal such as 0, 10, 20, 25, 55, 60, 390