Question: Consider the cascade process data in Table 11.5. (a) Set up an individuals control chart on y2. (b) Fit a regression model to y2, and

Consider the cascade process data in Table 11.5.
(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 differences between this chart and the one in part (a)
(c) Calculate the sample autocorrelation functions on y2 and on the residuals from the regression model in part (b) Discuss your findings.

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