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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 ...
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The following data set (WIRE) contains breaking strength measurements recorded in pounds per inch for 25 samples from a metal wire manufacturing process. The subgroup sample sizes vary between 3 and 7 ...
In some applications, a standard value may be available for the process standard deviation .This example shows how you can specify to compute the control limits. title 's Chart for Power Output'; ...
An animated guide explaining how the standard devition can give you a clearer picture of a sample than averages alone. An example involving zoo keepers and some very dangerous animals demonstrates ...
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