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Over a three day period a clothing store sold the following number of shirts: 52, 65,...

Over a three day period a clothing store sold the following number of shirts: 52, 65, and 45. Over the same period the clothing store had 3, 7, and 1 sales staff working on the shop floor. Answer the following questions:

Enter your final answers in the boxes below. Show ALL working by uploading your handwritten working for this question to Laulima Dropbox within 15 minutes of completing your exam. Correct answers without working shown will not receive full credit. Note that writing Excel functions does NOT qualify as showing working.

a) (2) What is the sample standard deviation of number of shirts sold? What is the sample standard deviation of the number of sales staff?

b) (3) What is the sample covariance? Why is it hard to interpret?

Math   Statistics-And-Probability   
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