Chapter 9.1, Problem 2E

For Exercises 1-4, do the following:

(a) Group the data as indicated.

(b) Prepare a frequency distribution with a column for intervals and frequencies.

(c) Construct a histogram.

(d) Construct a frequency polygon.

Use seven intervals, starting with 30-39.

79	71	78	87	69	50	63	51
60	46	65	65	56	88	94	56
74	63	87	62	84	76	82	67
59	66	57	81	93	93	54	88
55	69	78	63	63	48	89	81
98	42	91	66	60	70	64	70
61	75	82	65	68	39	77	81
67	62	73	49	51	76	94	54
83	71	94	45	73	95	72	66
71	77	48	51	54	57	69	87