Compare the formulas given in Exercise 5.11 with the usual ones for computing a mean and variance for the sample yi = 212 + i for i = 1,...,16. Update your solution to Exercise 5.5 with the additional...

Compare the formulas given in Exercise 5.11 with the usual ones for computing a mean and variance for the sample yi = 212 + i for i = 1,...,16.

Update your solution to Exercise 5.5 with the additional observation y7 = 15.5, using Givens transformations.