Find the Variance 4 , 12 , 36 , 108

Math
, , ,
The mean of a set of numbers is the sum divided by the number of terms.
Cancel the common factor of and .
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Factor out of .
Factor out of .
Factor out of .
Factor out of .
Factor out of .
Factor out of .
Factor out of .
Cancel the common factors.
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Factor out of .
Cancel the common factor.
Rewrite the expression.
Divide by .
Simplify by adding numbers.
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Add and .
Add and .
Add and .
Set up the formula for variance. The variance of a set of values is a measure of the spread of its values.
Set up the formula for variance for this set of numbers.
Simplify the result.
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Simplify the numerator.
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Subtract from .
Raise to the power of .
Subtract from .
Raise to the power of .
Subtract from .
Raise to the power of .
Subtract from .
Raise to the power of .
Add and .
Add and .
Add and .
Simplify the expression.
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Subtract from .
Divide by .
Approximate the result.
Find the Variance 4 , 12 , 36 , 108

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