#78. Consider a sample x1, x2, …, xn and suppose that the values of x, s2, and s have been calculated.
a. Let yi = xi – x for i = 1, …, n. How do the values of s2 and s for the yi’s compare to the corresponding values for the xi’s? Explain.
b. Let zi = (xi – x ) / s for i = 1, …, n. What are the values of the sample varianceand sample standard deviationfor the zi’s?
Please see attached.