Convert 10% to a decimal.
Multiply 0.1 by 120.
The mean of a set of numbers is the sum divided by the number of terms.
Divide 12 by 1.
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.
Subtract 1 from 1.
The expression contains a division by 0 The expression is undefined.
Approximate the result.
Find the Variance 10%*120