Select the method or formula of your choice.
Term | Description |
---|---|
v | number of sample means that are averaged |
μ | process mean |
k | parameter for Test 1. The default is 3. |
σ | process standard deviation |
ni | size of subgroup i |
Term | Description |
---|---|
ni | size of subgroup i |
v | number of sample means that are averaged |
μ | process mean |
k | parameter for Test 1. The default is 3. |
σ | process standard deviation |
If you use a Box-Cox transformation, Minitab transforms the original data values (Yi) according to the following formula:
where λ is the parameter for the transformation. Minitab then creates a control chart of the transformed data values (Wi). To learn how Minitab chooses the optimal value for λ, go to Methods and formulas for Box-Cox Transformation.
λ | Transformation |
---|---|
2 | |
0.5 | |
0 | |
−0.5 | |
−1 |