Chapter 2.1, Problem 17P

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: Tumor Recurrence Certain kinds of tumors tend to recur. The following data represent the lenths of time, in months for a tumor to recur after chemotherapy (Reference: D. P. Byar. Journal of Urology, Vol. 10. pp. 556-561). Note: These data are also available for download at the Companion Sites for this text.

19	18	17	1	21	22	54	46	25	49
50	1	59	39	43	39	5	9	38	18
14	45	54	59	46	50	29	12	19	36
38	40	43	41	10	50	41	25	19	39
27	20

Use five classes.