VDEVSQ function
VDEVSQ(variable[,filter]) returns the sum of squares of differences from the mean. An optional filter can be specified.
The equation for VDEVSQ is:
$$ \sum_{}^{}{(x-\bar{x})^2}$$
Note
This function calculates a statistic on a variable. Be careful when you use this function in cells of the columns that correspond to the variable, because this actually adds a value to the variable which can lead to unexpected and faulty results. You can exclude the cell to avoid this.