Why does the formula for calculating the sample variance, s squared equals StartFraction Summation from nothing to nothing left parenthesis x minus x overbar right parenthesis squared Over n minus 1 EndFraction , involve squaring the difference between each value and the mean? Question content area bottom Part 1 Choose the correct answer below. A. If the differences were not squared, then the sum of all deviations from the mean would always be zero since the positive deviations are balanced by the negative deviations. B. The formula involves squaring the differences so that the square root can be taken when the sample standard deviation is calculated. C. The formula involves squaring the differences so that the units on the sample variance will be the same as the units on the original data. D. If the differences were not squared, then the formula would be calculating the sample standard deviation instead of the variance