. Consider the cascade process data in Table 10-5.

(a) Set up an individuals control chart on y2-

(b) Fit a regression model to y2, and set up an individuals control chart on the residuals. Comment on the dif- -

ferences between this chart and the One in part (a).

(c) Calculate the sample autocorrela-

tion functions on y2 and on the residuals from the regression model in part (b). Discuss your findings.