The probability distribution for the personality inventory test for passiveaggressive traits discussed in Example 2 is shown

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The probability distribution for the personality inventory test for passiveaggressive traits discussed in Example 2 is shown below. Find the variance and standard deviation of the probability distribution.

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Data from Example 2

An industrial psychologist administered a personality inventory test for passive-aggressive traits to 150 employees. Each individual was given a whole number score from 1 to 5, where 1 is extremely passive and 5 is extremely aggressive. A score of 3 indicated neither trait. The results are shown at the left. Construct a probability distribution for the random variable x. Then graph the distribution using a histogram.

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Elementary Statistics Picturing The World

ISBN: 9781292260464

7th Global Edition

Authors: Betsy Farber, Ron Larson

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