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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola
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Solution: In Exercises 2932, find the mean of the data summarized in the given frequency

Chapter 3, Problem 32

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QUESTION:

In Exercises 2932, find the mean of the data summarized in the given frequency distribution. Also, compare the computed means to the actual means obtained by using the original list of data values, which are as follows: (Exercise 29) 35.9 years (Exercise 30) 44.1 years (Exercise 31) 84.4 (Exercise 32) 15.0 years.Years President Lived After First Inauguration Frequency04 859 21014 51519 72024 42529 63034 03539 1

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QUESTION:

In Exercises 2932, find the mean of the data summarized in the given frequency distribution. Also, compare the computed means to the actual means obtained by using the original list of data values, which are as follows: (Exercise 29) 35.9 years (Exercise 30) 44.1 years (Exercise 31) 84.4 (Exercise 32) 15.0 years.Years President Lived After First Inauguration Frequency04 859 21014 51519 72024 42529 63034 03539 1

ANSWER:

Problem 32

In Exercises 29-32, find the mean of the data summarized in the given frequency distribution. Also, compare the computed means to the actual means obtained by using the original list of data values, which are as follows: (Exercise 29) 35.9 years (Exercise 30) 44.1 years (Exercise 31) 84.4 (Exercise 32) 15.0 years.

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The Mean from frequency distribution can be calculated using the formulae,

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