Question
Asked Sep 26, 2019
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Given X:20,15,15,30,15 Find Range, mean of X values(xbar), standard deviation of X,and CV. Use the computational formula to calculate the Variance of X values. Write the governing equations

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Step 1

The number of values of X is n=5.

The range of X is calculated below.

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R (Maximum value Minimun value) =30-15 = 15

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Step 2

The arithmetic mean of X is calculated below.

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1 Σ 1 х, Нo9 (95) 19

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Step 3

The standard deviation of X is...

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(20-19)(15-19)(15-19 +(30-19)+(15-19j (170) = 34 5.83

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