# Question

Eighty adults were asked to watch a 30-minute infomercial until the presentation ended or until boredom became intolerable. The following table lists the frequency distribution of the times that these adults were able to watch the infomercial. 2.2 Organizing and Graphing Quantitative Data 53

Time Number of

(minutes) Adults

0 to less than 6......... 16

6 to less than 12......... 21

12 to less than 18........ 18

18 to less than 24........ 11

24 to less than 30........ 14

Draw two histograms for these data, the first without truncating the frequency axis. In the second case, mark the frequencies on the vertical axis starting with 10. Briefly comment on the two histograms.

Time Number of

(minutes) Adults

0 to less than 6......... 16

6 to less than 12......... 21

12 to less than 18........ 18

18 to less than 24........ 11

24 to less than 30........ 14

Draw two histograms for these data, the first without truncating the frequency axis. In the second case, mark the frequencies on the vertical axis starting with 10. Briefly comment on the two histograms.

## Answer to relevant Questions

Briefly explain the concept of cumulative frequency distribution. How are the cumulative relative frequencies and cumulative percentages calculated? Using the frequency distribution table constructed in Exercise 2.19, prepare the cumulative frequency, cumulative relative frequency, and cumulative percentage distributions. Refer to the frequency distribution table constructed in Exercise 2.27. Prepare the cumulative frequency, cumulative relative frequency, and cumulative percentage distributions. Draw an ogive for the cumulative frequency ...Refer to Exercise 2.20, which contains data on the number of fatal motorcycle accidents in each of South Carolina’s 46 counties for the year 2009. Prepare a stem-and-leaf display for those data. Arrange the leaves for each ...Refer to data given in Exercise 2.20 on the number of fatal motorcycle accidents in each of South Carolina’s 46 counties during the year 2009. Create a dotplot for those data.Post your question

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