Chapter 13, Lesson 7


13-7.A make frequency tables
Organize the following data in a frequency table. Use intervals of 5, beginning with the interval 25-29.
45 30 26 52 44 54 46 43 45 42
46 31 33 42 25 29 37 44 45 36
35 40 52 48 35 39 40 42 51 29

13-7.B find the median and quartiles of a data set
Find the indicated measures for this data set:
73, 62, 93, 87, 83, 94, 77, 80, 79, 95, 68, 85, 81
a. the median
b. the lower quartile
c. the upper quartile