# Find the Variance 30 , 31 , 32 , 33 , 34 , , , ,
The mean of a set of numbers is the sum divided by the number of terms.
Simplify the numerator.
Divide by .
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.
Simplify the numerator.
Subtract from .
Raise to the power of .
Subtract from .
Raise to the power of .
Subtract from .
Raising to any positive power yields .
Subtract from .
One to any power is one.
Subtract from .
Raise to the power of .
Reduce the expression by cancelling the common factors.
Subtract from .
Cancel the common factor of and .
Factor out of .
Cancel the common factors.
Factor out of .
Cancel the common factor.
Rewrite the expression.
Approximate the result.
Find the Variance 30 , 31 , 32 , 33 , 34

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