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In: Statistics and Probability

Sample annual salaries​ (in thousands of​ dollars) for employees at a company are listed. 52  49  ...

Sample annual salaries​ (in thousands of​ dollars) for employees at a company are listed. 52  49  45  51  38  38  52  49  45  34  51  52  42

​(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)?

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