12th-Grade Sleep The histogram shows hours of sleep on a school night for a sample of 12th-grade students. a. Use the histogram and left-hand side of each bin to estimate the mean hours (to the nearest tenth) of sleep for 12th-graders on a school night. b. When comparing the mean and the median for this data set, would you expect these two values to be fairly similar or would you expect that one is much greater than the other? Explain.
12th-Grade Sleep The histogram shows hours of sleep on a school night for a sample of 12th-grade students. a. Use the histogram and left-hand side of each bin to estimate the mean hours (to the nearest tenth) of sleep for 12th-graders on a school night. b. When comparing the mean and the median for this data set, would you expect these two values to be fairly similar or would you expect that one is much greater than the other? Explain.
Solution Summary: The author explains how the histogram represents the hours of sleep on a school night for 12th grade students.
12th-Grade Sleep The histogram shows hours of sleep on a school night for a sample of 12th-grade students.
a. Use the histogram and left-hand side of each bin to estimate the mean hours (to the nearest tenth) of sleep for 12th-graders on a school night.
b. When comparing the mean and the median for this data set, would you expect these two values to be fairly similar or would you expect that one is much greater than the other? Explain.
Definition Definition Measure of central tendency that is the value that occurs most frequently in a data set. A data set may have more than one mode if multiple categories repeat an equal number of times. For example, in a data set with five item—3, 5, 5, 29, 473—the mode is 5 because it occurs twice and no other value occurs more than once. On a histogram or bar chart, the element with the highest bar represents the mode. Therefore, the mode is sometimes considered the most popular option. The mode is useful for nominal or categorical data (e.g., the most common color car that users purchase), but it is problematic for continuous data because it is more likely not to have any value that is more frequent than the other.
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Part (b)
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McGill…
Name
Harvard University
California Institute of Technology
Massachusetts Institute of Technology
Stanford University
Princeton University
University of Cambridge
University of Oxford
University of California, Berkeley
Imperial College London
Yale University
University of California, Los Angeles
University of Chicago
Johns Hopkins University
Cornell University
ETH Zurich
University of Michigan
University of Toronto
Columbia University
University of Pennsylvania
Carnegie Mellon University
University of Hong Kong
University College London
University of Washington
Duke University
Northwestern University
University of Tokyo
Georgia Institute of Technology
Pohang University of Science and Technology
University of California, Santa Barbara
University of British Columbia
University of North Carolina at Chapel Hill
University of California, San Diego
University of Illinois at Urbana-Champaign
National University of Singapore…
Chapter 3 Solutions
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