Question

From the Information Please Almanac, we obtained the ages at inauguration for the first 44 presidents of the United States (from George Washington to Barack H. Obama).
a. Identify the classes for grouping these data, using limit grouping with classes of equal width 5 and a first class of 40-44.
b. Identify the class marks of the classes found in part (a).
c. Construct frequency and relative-frequency distributions of the inauguration ages based on your classes obtained in part (a).
d. Draw a frequency histogram for the inauguration ages based on your grouping in part (a).
e. Identify the overall shape of the distribution of inauguration ages for the first 44 presidents of the United States.
f. State whether the distribution is (roughly) symmetric, right skewed, or left skewed.


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  • CreatedAugust 13, 2015
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