Need help with this numerical analysis / scientific computing question. Scripts can be written using MATLAB or Python

In the statistical treatment of data one often needs to compute the quantities Ti- x), Tn where x1, T2,... , Tn are the given data. Assume that n is large, say n = 10,000. It is easy to see that s2 can also be written as 72 (a) Which of the two methods to calculate s2 is cheaper in terms of flop counts? (Assume has already been calculated and give the operation counts for these two options (b) Which of the two methods is expected to give more accurate re- sults for s2 in general? (Justify briefly.) (c) Write a little MATLAB script to check whether your answer to the previous question was correct