# Question

Consider the temperature data in exercise 10.24. Set up an EWMA control chart on the residuals from the model you fit to the data in part (c) of that exercise. Compare it to the individuals chart you constructed using the residuals.

## Answer to relevant Questions

Set up a moving center line EWMA control chart for the temperature data in Exercise 10.24. Compare it to the residuals control chart in Exercise 10.24, part (c). To find the optimal , fit an ARIMA (0,1,1) (= EWMA = ...An x chart is used to maintain current control of a process. The cost parameters are a1 = $0.50, a2 = $0.10, a3 = $25, a′3 = $50, and a4 = $100. A single assignable cause of magnitude δ = 2 occurs, and the duration of the ...Reconsider the data in Exercises 10.5 and 10.6. Suppose the process measurements are individual data values, not subgroup averages. In Exercise 10.5 (a) Use observations 1-20 in Exercise 10.5 to construct appropriate group ...Consider all 30 observations on the first two process variables in Table 11.6. Calculate an estimate of the sample covariance matrix using both estimators S1 and S2 discussed in Section 11.3.2. Are the estimates very ...Consider the p = 9 process variables in Table 11.5 (a) Perform a PCA on the first 30 observations. Be sure to work with the standardized variables. (b) How much variability is explained if only the first r = 3 principal ...Post your question

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