For Exercise 2.91, see page 106; for 2.92 and 2.93, see pages 106–107; for 2.94 to 2.96, see page 108; for 2.97 to 2.99, see page 109; and for 2.100 and 2.101, see pages 111–112.

Question 2.112

2.112 Nonresponse in a survey of companies

A business school conducted a survey of companies in its state. It mailed a questionnaire to 200 small companies, 200 medium-sized companies, and 200 large companies. The rate of nonresponse is important in deciding how reliable survey results are. Here are the data on response to this survey:

nresp

Small Medium Large
Response 124 80 41
No response 76 120 159
Total 200 200 200
  1. What was the overall percent of nonresponse?
  2. Describe how nonresponse is related to the size of the business. (Use percents to make your statements precise.)
  3. Draw a bar graph to compare the nonresponse percents for the three size categories.