The scores earned in a flower-growing competition are represented in the stem-and-leaf plot. 0 5 1 0, 3, 7 2 4, 6, 8 3 2 4 5 8 Key: 5|8 means 58 What is the appropriate measure of variability for the data shown, and what is its value? The range is the best measure of variability, and it equals 18.5. The IQR is the best measure of variability, and it equals 45. The range is the best measure of variability, and it equals 45. The IQR is the best measure of variability, and it equals 18.5