Q.2 A sample of college students was asked how much they spent monthly on a cell phone plan (to the nearest dollar).
Monthly cell phone plan cost ($) Number of students
10-20 8
20-30 16
30-40 21
40-50 11
50-60 4
1. What is the total frequency of the given data set? [1]
2. Determine the following. Explain your answer. a. Median class b. Modal class c. Lower boundary of the median class d. Lower boundary of the modal class . [3]
3. Find the mode, median and the mean of the set of data? [6]
4. How do the mean, median, and the mode of the set of data compare? [2]
5. Also compute and interpret first and third quartile, 60th percentile and 9th decile. [5]