Question: For data that are grouped in classes based on more
For data that are grouped in classes based on more than a single value, lower class limits (or cutpoints) are used on the horizontal axis of a histogram for depicting the classes. Class marks (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.
Answer to relevant QuestionsDiscuss the relative advantages and disadvantages of stemand leaf diagrams versus frequency histograms. Professor Weiss asked his introductory statistics students to state how many siblings they have. The responses are shown in the following table. Use single-value grouping. a. Determine a frequency distribution. b. Obtain a ...Patients who undergo chronic hemodialysis often experience severe anxiety. Videotapes of progressive relaxation exercises were shown to one group of patients and neutral videotapes to another group. Then both groups took the ...Frustrated passengers, congested streets, time schedules, and air and noise pollution are just some of the physical and social pressures that lead many urban bus drivers to retire prematurely with disabilities such as ...The Internal Revenue Service (IRS) publishes data on adjusted gross incomes in Statistics of Income, Individual Income Tax Returns. The following relative frequency histogram shows one year's individual income tax returns ...
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