Mean: 74.59 2. List two measures of variation or "spread". Range:89 Standard Deviation: 10.44281687 3. Compare the distributions for Classes A, B and C. a. What is the shape of all three of these graphs? How do the mean and median confirm this shape? | b. Which characteristic do these distributions have in common: center or spread? c. Now look at the Excel descriptive statistics in the first table you copied below. Which descriptive statistic(s) support your response to 3b? d. Which characteristic do these distributions NOT have in common: center or spread? e. Now look at the descriptive statistics in the first table you copied from Excel. Which descriptive statistic(s) support your response to 3d? Lab 3 Page 3 of 6 ibility: Investigate X W F1 FAZ F9 F10 FS F6