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Unformatted text preview: Example 1: Mean Control Chart ( known) Select the Example 1 worksheet , and although the data has been entered, you may want to clear Enter the five sample means (12.10, 12.12, 12.11, 12.10, and 12.12) in the Calculation table at the Point out that the template computes the average of sample means = 12.11, and the 5 sample Enter the following data in the table in the top middle of the template: Point out that the upper and lower control limits are calculated and also graphed on the chart Demonstrate the effect of changing z by entering .1 for z, pressing the spinner button beside Goal Seek example: what z value would correspond to control limits from 12.095 to 12.125? below and above 12.11, with standard deviation = .02 / 4 = .01....
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- Spring '11