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CIs other then 95% for Parameter Estimates

arcadinal

Community Trekker

Joined:

Sep 17, 2014

I am currently working with a linear fit via the "Fit Y by X" option in JMP. In regards to the Parameter Estimates table, there is an option when right clicking on the table under "columns" to add columns for the upper and lower 95% confidence intervals for the Intercept and x4, but what if I want to know confidence intervals other then 95%? Is there a way to get JMP to display other values? (i.e. 90% or 99%)?

7295_CIQuestion.jpg

1 ACCEPTED SOLUTION

Accepted Solutions
Solution

Hi Arcadinal,

In Fit Y by X the confidence level for the parameter estimate confidence intervals is not selectable. However, you can perform the identical analysis with the more flexible Fit Model and in that platform you can set the confidence level for the confidence intervals. To set the alpha level, first launch Fit Model (Analyze > Fit Model) and specify your Y and X variables. Before clicking Run, click the Red Triangle in the model launch and select Set Alpha Level. To get 99% intervals, enter .01, for 90% intervals enter .10.

7296_Screen Shot 2014-09-17 at 10.43.05 AM.png

Next, reveal the confidence intervals in the same way you did before (right clicking the Parameter Estimates > Columns). You will find confidence intervals corresponding to the alpha level you specified.

7297_Screen Shot 2014-09-17 at 10.43.14 AM.png

I hope this helps!

Julian

3 REPLIES
Solution

Hi Arcadinal,

In Fit Y by X the confidence level for the parameter estimate confidence intervals is not selectable. However, you can perform the identical analysis with the more flexible Fit Model and in that platform you can set the confidence level for the confidence intervals. To set the alpha level, first launch Fit Model (Analyze > Fit Model) and specify your Y and X variables. Before clicking Run, click the Red Triangle in the model launch and select Set Alpha Level. To get 99% intervals, enter .01, for 90% intervals enter .10.

7296_Screen Shot 2014-09-17 at 10.43.05 AM.png

Next, reveal the confidence intervals in the same way you did before (right clicking the Parameter Estimates > Columns). You will find confidence intervals corresponding to the alpha level you specified.

7297_Screen Shot 2014-09-17 at 10.43.14 AM.png

I hope this helps!

Julian

arcadinal

Community Trekker

Joined:

Sep 17, 2014

That does it, thank you!

julian

Staff

Joined:

Jun 25, 2014

You're welcome! I'm glad that answered your question.

Julian