Chapter 2.1, Problem 16P

For Problems 15-20, use the specified number of classes to do the following.

(a) Find the class width.

(b) Make a frequency table showing class limits, class boundaries, midpoints, frequencies, relative frequencies, and cumulative frequencies.

(c) Draw a histogram.

(d) Draw a relative-frequency histogram.

(e) Categorize the basic distribution shape as uniform, mound-shaped symmetric, bimodal, skewed left, or skewed right.

(f) Draw an ogive.

(g) Interpretation Discuss some of the features about the data that the graphs reveal. Consider items such as data range, location of the middle half of the data, unusual values, outliers, etc.

Medical: Glucose Testing The followingdata represent glucose blood levels (mg/100ml) after a 12-hour fast for a random sample of 70 women (Referenece: American Journal of Clinical Nutrition. Vol. 19. pp. 345-351). Note: These data are also available for download at the Companion Sites for this text.

45	66	83	71	76	64	59	59
76	82	80	81	85	77	82	90
87	72	79	69	83	71	87	69
81	76	96	83	67	94	101	94
89	94	73	99	93	85	83	80
78	80	85	83	84	74	81	70
65	89	70	80	84	77	65	46
80	70	75	45	101	71	109	73
73	80	72	81	63	74

Use six classes.