https://community.jmp.com/t5/Discussions/Hotelling-s-T2-contributions-formula/m-p/415947#M66515 <P>Not a statistical explanation...</P><P>&nbsp;</P><P>My guess is that you have a contribution formula for one of the variables you have. I think you sum all of the contribution formulas together you should end up with the T2 (or very close to it).</P><P>Using Iris.jmp as example:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="jthi_0-1630999406826.png" style="width: 400px;"><img src="https://community.jmp.com/t5/image/serverpage/image-id/35561i5BC2580D81778BF7/image-size/medium?v=v2&amp;px=400" role="button" title="jthi_0-1630999406826.png" alt="jthi_0-1630999406826.png" /></span></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="jthi_1-1630999971980.png" style="width: 400px;"><img src="https://community.jmp.com/t5/image/serverpage/image-id/35562i71D4D2E01C7CA4CF/image-size/medium?v=v2&amp;px=400" role="button" title="jthi_1-1630999971980.png" alt="jthi_1-1630999971980.png" /></span></P><P>&nbsp;</P><P>&nbsp;</P> Tue, 07 Sep 2021 07:33:39 GMT jthi 2021-09-07T07:33:39Z https://community.jmp.com/t5/Discussions/Hotelling-s-T2-contributions-formula/m-p/415923#M66514 <P>In articles, for t2 contributions using formula (X-colMean(X))/std.dev. But in Column Formula of T2 variable contribution, saved from Model Driven Multivariate Control Chart(JMP 16), we can see multiplier before&nbsp;(X-colMean(X))/std.dev. For Example:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="EGrishin_0-1630996172636.png" style="width: 749px;"><img src="https://community.jmp.com/t5/image/serverpage/image-id/35559iCA482EC8FECEF797/image-dimensions/749x128?v=v2" width="749" height="128" role="button" title="EGrishin_0-1630996172636.png" alt="EGrishin_0-1630996172636.png" /></span></P><P>What is this?</P><PRE>1.98849210478157 * :_07MAA10CT111 + 1.68074231499255 * :_07MAA10CT109 + (-1779.94365628861)</PRE> Sat, 10 Jun 2023 20:46:38 GMT https://community.jmp.com/t5/Discussions/Hotelling-s-T2-contributions-formula/m-p/415923#M66514 EGrishin 2023-06-10T20:46:38Z https://community.jmp.com/t5/Discussions/Hotelling-s-T2-contributions-formula/m-p/415947#M66515 <P>Not a statistical explanation...</P><P>&nbsp;</P><P>My guess is that you have a contribution formula for one of the variables you have. I think you sum all of the contribution formulas together you should end up with the T2 (or very close to it).</P><P>Using Iris.jmp as example:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="jthi_0-1630999406826.png" style="width: 400px;"><img src="https://community.jmp.com/t5/image/serverpage/image-id/35561i5BC2580D81778BF7/image-size/medium?v=v2&amp;px=400" role="button" title="jthi_0-1630999406826.png" alt="jthi_0-1630999406826.png" /></span></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="jthi_1-1630999971980.png" style="width: 400px;"><img src="https://community.jmp.com/t5/image/serverpage/image-id/35562i71D4D2E01C7CA4CF/image-size/medium?v=v2&amp;px=400" role="button" title="jthi_1-1630999971980.png" alt="jthi_1-1630999971980.png" /></span></P><P>&nbsp;</P><P>&nbsp;</P> Tue, 07 Sep 2021 07:33:39 GMT https://community.jmp.com/t5/Discussions/Hotelling-s-T2-contributions-formula/m-p/415947#M66515 jthi 2021-09-07T07:33:39Z https://community.jmp.com/t5/Discussions/Hotelling-s-T2-contributions-formula/m-p/415956#M66517 <P>Thanks!)</P> Tue, 07 Sep 2021 10:25:15 GMT https://community.jmp.com/t5/Discussions/Hotelling-s-T2-contributions-formula/m-p/415956#M66517 EGrishin 2021-09-07T10:25:15Z