15. The following distribution displays the amount of money spent on food per week for a random sample of college students. I'll-n .. 0 10 20 30 40 50 60 70 30 90 100 110 120 130 Weekly Food Cost Frequency :3. N 4: cr- 00 Which measure best summarizes the variability in this data set, and why? a. Range, because it tells you the overall spread of the data b. Standard deviation, because it is based on all the information in the data set c. Stande deviation, because it is the most commonly used measure of variability d. Interquartile range, because it is resistant to outliers