Question

Table 2.15
Age group in years % of U.S.
Under 5 7.3
5–9 7.3
10–14 7.2
15–19 7.0
20–24 6.6
25–29 7.2
30–34 8.1
35–39 8.5
40–44 7.8
45–49 6.9
50–54 5.3
55–59 4.3
60–64 3.8
65–69 7.0
70-74 4.3
75 and above 1.4
(a) Why is it impossible to construct a percentage histogram or frequency polygon for the distribution in Table 2.15? (Explain in detail)
(b) How would you modify the distribution so that a percentage histogram and frequency polygon could be constructed? (Explain in detail)

Answer 1

Answer:

a)illustrated here are histograms, frequency polygons, ogives, pie graphs, Pareto charts, ... Step 1 Make a table as shown. A. B. C. D. Class. Tally. Frequency. Percent. A. B. O. AB ... Skewness will be explained in detail.