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johnwhat
johnwhat
Level I

Full Factorial Pairwise Comparisons Error

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Created: Mar 23, 2022 04:08 AM  |  Last Modified: Mar 23, 2022 1:08 AM (475 views)

I am trying to solve a very frustrating error coming from JMP regarding full factorial analyses. When I try to run multiple comparisons on my data (screenshot below), I receive the following error: "All pairwise comparisons mean-mean scatterplot cannot be shown because confidence intervals cannot be computed.".My dataset should be in the right format and absolutely nothing I can find online has been helpful, anyone have a solution?

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2 REPLIES 2
txnelson
Super User txnelson
Super User

Re: Full Factorial Pairwise Comparisons Error

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Created: Mar 23, 2022 04:32 AM  |  Last Modified: Mar 23, 2022 1:32 AM (471 views)  |  Posted in reply to message from johnwhat 03-23-2022

No screen shot was included

Jim
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Mark_Bailey
Staff Mark_Bailey
Staff

Re: Full Factorial Pairwise Comparisons Error

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Created: Mar 23, 2022 10:48 AM  |  Last Modified: Mar 23, 2022 7:48 AM (460 views)  |  Posted in reply to message from johnwhat 03-23-2022

If you specified the full factorial model, then estimating all the parameters will exhaust the available degrees of freedom from the design. It is impossible to estimate the root mean square error, which is the basis for the standard error of the parameters. With out the SE, you cannot compute the confidence interval.

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