Essay
A sample of n = 10 measurements consists of the following values: 15, 12, 13, 16, 11, 12, 14, 15, 11, and 13. Calculate the value of the standard deviation (s) and the range (R), and use R to approximate s. Is this a good approximation?
Correct Answer:
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s = 1.75, R = 5, s 
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