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Pooled Standard Deviation: How Do You Calculate It?

When you have the average production of three machines, it is easy to calculate the average or mean production. You just add ...
Simon Fraser University

Example 34.2: Specifying Standard Values for the Process Mean and Standard Deviation

For example, suppose that the manufacturing process described in the previous example produces engines whose weights are normally distributed with a mean of 1250 and a standard deviation of 12. The ...