Cumulative Relative Frequencies

Question

For years Levi’s have been the most popular jeans for men to wear. In April 1999, Fortune published an article showing a significant decline in Levi’s U.S. market share for jeans sold to men from 1990 compared to 1998. The data for competitive sales of jeans to men are summarized in the table below:
 

Brand of Jeans 1990 Market Share (%) 1998 Market Share (%)

Levi’s 48.2 25.0

Lee and Wrangler 22.1 31.9

Private Label 3.2 20.4

All Other 26.5 22.7

Total 100.0 100.0
 

Construct a pie chart for the market shares of the brands for each the years 1990 and 1998. Label all the slices of the pie with categories and percentages. What competitors appear to have gained market share at the expense of Levi’s?

 

Question

Accounting Horizons published a 1998 study in which corporate executives reported the number of times each year they held audit committee meetings with the chief internal auditor of the corporation. The raw data are shown below:
 

0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 5

a. Construct a frequency table that shows relative frequencies (in percentages) and cumulative relative frequencies (in percentages).

b. Construct a relative frequency histogram and a cumulative frequency histogram for these data with the proper title and labels for each axis.

c. 3 or less meetings are held for approximately what percentage of time?