Dear All, anyone can help?
I have several ys measured on several products as a function of time. All the data are reported on a jmp data table. I want to perform a capability analysis for all the ys and all the products. I tried to do this by using the capability command specifying all the ys and the product label column under the field 'by'. After that, jmp asks for the specification limits but it does not allow me to load different specification limits for each product. It seems strange that it does allow to use the command 'by' but then it does not allow to load different spec limits not only for different ys but also for different product. Any help on this? Many thanks, Marcello.
Sounds like you have all your y's stacked in a single column? One simple workaround could be to to a Tables -> Split on the original data table. This will place the y's in their own separate columns and then you'll be able to enter specification limits for each column.
Thanks Peter. I actually have all the ys in their own columns but I have rows for different products. The product name is reported in a column. Each product has its own spec limits for the different ys. Marcello.
Your data is clearly not in the correct data structure to do what you want. Take a look at the sample data table called
Help==>Sample Data Library
It has the necessary data format, and also some embedded scripts that will show you how it all works.
Many thanks Jim, I have understood how the data have to be arranged. Best regards, Marcello.