2.3.1 In a study of the proliferative activity of breast cancers, Veronese and Gambacorta

(A-l) used the Ki-67 monoclonal antibody and immunohistochemical methods. The investigators obtained tumor tissues from 203 patients with breast carcinoma. The patients ranged in age from 26 to 82 years. The following table shows the Ki-67 values (expressed as percents) for these patients.
10.12 10.80 10.54 27.30 8.38 10.15 5.48 23.50 32.60 42.70 19.30 16.40 4.40 26.80 16.60 33.00 11.65 26.30 1.73 35.90 9.63 9.31 7.40 9.35 14.78 21.42 25.11 12.60 17.96 41.12 28.30 19.50 15.92 19.40 7.19 4.65 73.00 17.84 10.90 2.74 21.09 11.95 33.30 4.53 19.40 1.00 27.00 9.03 51.20 6.40 13.72 32.90 9.80 2.43 2.00 8.77 9.40 35.40 51.70 43.50 3.00 4.70 14.00 15.00 3.60 4.09 9.20 6.20 5.00 15.00 17.60 50.00 10.00 20.00 30.00 5.22 5.00 15.00 25.00 10.00 12.70 30.00 10.00 15.00 20.00 7.39 4.00 25.00 20.00 30.00 21.36 49.85 29.70 19.95 5.00 11.36 24.89 29.55 10.00 38.90 8.12 28.85 19.80 4.99 6.00 3.14 5.00 44.20 30.00 9.88 4.33 9.20 4.87 10.00 29.10 5.07 2.00 3.00 2.00 2.96 8.10 4.84 9.79 5.00 9.50 4.23 10.00 19.83 20.00 4.77 13.11 75.00 20.00 5.00 4.55 4.07 14.79 8.99 3.97 30.00 6.07 15.00 40.00 18.79 13.76 45.82 4.32 5.69 1.42 18.57 5.58 12.82 4.50 4.41 1.88 5.00 10.00 4.12 14.24 9.11 9.69 8.37 6.20 2.07 3.12 4.14 2.03 2.69 3.69 5.42 4.59 10.00 6.27 6.37 13.78 27.55 9.83 6.55 8.21 3.42 3.51 9.10 11.20 6.88 7.53 8.58 5.00 29.50 9.60 6.03 14.70 5.60 28.10 5.48 7.00 6.72 3.32 13.52 5.70 17.80 13.10 9.75 7.37 Use these data to prepare:

a. A frequency distribution.

b. A relative frequency distribution.

c. A cumulative frequency distribution.

d. A cumulative relative frequency distribution.

e. A histogram.

f. A frequency polygon.