Chapter 12, Problem 5RE

The 50 grades on a physiology lest are shown. Use the data to solve Exercises 5-6.

44	24	54	81	18
34	39	63	67	60
72	36	91	47	75
57	74	87	49	86
59	14	26	41	90
13	29	13	31	68
63	35	29	70	22
95	17	50	42	27
73	11	42	31	69
56	40	31	45	51

Construct a grouped frequency distribution for the data. Use 0-39 for the first class. 40-49 for the second class, and make each subsequent class width the same as the second class.