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The given set is $\"\"$ .

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To find the mean: Add the numbers and then divide by the number of values in the data set. $\"\"$

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$\"\"$ (Add: $\"\"$ )

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$\"\"$ (Divide: $\"\"$ ) $\"\"$

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To find the variance: Square the difference between each number and the mean.Then add the square,and divide by the number of values.

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$\"\"$ $\"\"$ (Subtract)

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$\"\"$

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$\"\"$ (Add: $\"\"$ )

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$\"\"$ . (Divide: $\"\"$ ) $\"\"$

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The standard deviation is the square root of the variance.

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$\"\"$

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$\"\"$ (Take the square root of the variance)

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$\"\"$ (Cancel square and root)

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$\"\"$ . (Use calculator) $\"\"$

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The solutions are $\"\"$ , $\"\"$ and $\"\"$ .