tree db8b454714aa4c31490073d7f8428fbe8e3e3bed
parent 488432c0e8c7bfc913f029535bae05c4f7225748
author Himanshu Warekar <himanshuwarekar@yahoo.com> 1557512382 +0530
committer Himanshu Warekar <himanshuwarekar@yahoo.com> 1557512382 +0530

fix: calculate variance