List of top Mathematics Questions on Variance and Standard Deviation asked in AP EAPCET

The variance of the following frequency distribution is

The variance of the first $n$ even natural numbers is:

If the variance of four numbers \(w,x,y,z\) is \(9\), then the variance of \[ 5w,5x,5y,5z \] is

If the total number of observations is \(20\), \[ \sum x_i=1000 \] and \[ \sum x_i^2=84000, \] then the variance of the distribution is