https://community.jmp.com/t5/Discussions/Fit-Life-by-X-Devalt-jmp-Parameter-correlation/m-p/883527#M104768 <P><STRONG>The JMP sample data file "Devalt.jmp" is included with the software. If you select the Weibull distribution" and perform the analysis using "Fit Life by X", the correlation between β0 and β1 in the results is -0.999188, indicating a very strong correlation. Is this acceptable? What impact does it have on the results, and is it significant? </STRONG></P> <P><STRONG>How can the robustness of this predictive model be evaluated?</STRONG></P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Correlation Matrix.png" style="width: 741px;"><img src="https://community.jmp.com/t5/image/serverpage/image-id/77852i050513A4DFD378A8/image-size/large?v=v2&amp;px=999" role="button" title="Correlation Matrix.png" alt="Correlation Matrix.png" /></span></P> Sun, 06 Jul 2025 02:46:26 GMT Rily_Maya 2025-07-06T02:46:26Z https://community.jmp.com/t5/Discussions/Fit-Life-by-X-Devalt-jmp-Parameter-correlation/m-p/883527#M104768 <P><STRONG>The JMP sample data file "Devalt.jmp" is included with the software. If you select the Weibull distribution" and perform the analysis using "Fit Life by X", the correlation between β0 and β1 in the results is -0.999188, indicating a very strong correlation. Is this acceptable? What impact does it have on the results, and is it significant? </STRONG></P> <P><STRONG>How can the robustness of this predictive model be evaluated?</STRONG></P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Correlation Matrix.png" style="width: 741px;"><img src="https://community.jmp.com/t5/image/serverpage/image-id/77852i050513A4DFD378A8/image-size/large?v=v2&amp;px=999" role="button" title="Correlation Matrix.png" alt="Correlation Matrix.png" /></span></P> Sun, 06 Jul 2025 02:46:26 GMT https://community.jmp.com/t5/Discussions/Fit-Life-by-X-Devalt-jmp-Parameter-correlation/m-p/883527#M104768 Rily_Maya 2025-07-06T02:46:26Z