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Also need to findthe standard deviation The numbers of courses taught per semester by a random sample of university professors are shown in the histogram.

Also need to findthe standard deviation

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The numbers of courses taught per semester by a random sample of university professors are shown in the histogram. Make a frequency distribution for the data. Then use the table to estimate the sample mean and the sample standard deviation of the data set. 2 Number of professors 3 Number of courses taught per semester Make a frequency distribution for the data. 2 3 22 4 The sample mean is )_( = '1. (Round to one decimal place as needed.)

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