WORKSHEET 7: Measures of Center Name: 3. Weighted Mean Formula KA 9. Calculate the mean of the given frequency distribution: # of exes over the past year Frequency 0 13 22 10 10. Calculate the mean of the given frequency distribution: Class Classes Frequency Midpoint 1.2 - 6.1 5.2 - 11.1 4 11.2 - 16.1 5 16.2 - 21.1 2 11. Scot surveyed the number of pets owned by each unit in his apartment building. The result is given below. 10 Frequency 4 # of pets a. How many units were surveyed ? b. Find the mean, median and mode C. Estimate the 03. Explain