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Find the sample mean and sample standard deviation

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Reference no: EM132932957

Sample annual salaries? (in thousands of? dollars) for employees at a company are listed.

47  40  60  59  34  34  47  40  60  31  59  47  52

(a) Find the sample mean and sample standard deviation.

?(b) Each employee in the sample is given a 5?% raise. Find the sample mean and sample standard deviation for the revised data set.

?(c) To calculate the monthly? salary, divide each original salary by 12. Find the sample mean and sample standard deviation for the revised data set.

?(d) What can you conclude from the results of? (a), (b), and? (c)?

Reference no: EM132932957

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