Chapter 2: Q. 8 (page 88)
When is the use of single-value grouping particularly appropriate?
Short Answer
When there are only a few different values in the data
Chapter 2: Q. 8 (page 88)
When is the use of single-value grouping particularly appropriate?
When there are only a few different values in the data
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What is the frequency distribution of qualitative data and why is it useful?
For data that are grouped in classes based on more than a single value, lower-class limits (or cut points) are used on the horizontal axis of a histogram for depicting the classes. Classmarks (or midpoints) can also be used, in which case each bar is centered over the mark (or midpoint) of the class it represents. Explain the advantages and disadvantages of each method.
In a current newspaper or magazine, find two examples of graphs that might be misleading. Explain why you think the graphs are potentially misleading.
In the special report "Mousetrap: The Most-Visited Shoe and Apparel E-tailers" (Footwear News, Vol. 58 , No. 3, p. 18), we found the following data on the average time, in minutes, spent per user per month from January to June of one year for a sample of shoe and apparel retail websites.

The following Minitab output shows a stem-and-leaf diagram for these data. The second column gives the stems, and the third column gives the leaves.

Drug dealer motivation is traditionally attributed to greed or social pressures. Researchers R. Highland and D. Dabney explore possible personality characteristics as a motivation in the article "Using Adlerian Theory to Shed Light on Drug Dealer Motivations" (Applied Psychology in Criminal Justice, Vol. 5, Issue 2, pp. 109-138). The following table lists the types of drug sold from a sample of convicted drug dealers.

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