https://community.jmp.com/t5/Discussions/scores-plot-for-PCA/m-p/486970#M73080 <P>Hi,</P> <P>I believe that you are referring to the Loading Plot, where the circle represents the maximum possible contribution of each variable (i.e., Distance from zero = 1). The length of the vectors (arrows) represents the relative contribution of each variable to the principal components displayed.</P> <P>Best,</P> <P>TS</P> Sun, 15 May 2022 18:50:34 GMT Thierry_S 2022-05-15T18:50:34Z https://community.jmp.com/t5/Discussions/scores-plot-for-PCA/m-p/486951#M73079 <P>The scores plot has a circle inside the scatterplot.&nbsp; Does this represent a confidence interval or is it more for decorative purposes?&nbsp; If the former, can the confidence interval be changed?</P> Fri, 09 Jun 2023 00:49:29 GMT https://community.jmp.com/t5/Discussions/scores-plot-for-PCA/m-p/486951#M73079 kjwx109 2023-06-09T00:49:29Z https://community.jmp.com/t5/Discussions/scores-plot-for-PCA/m-p/486970#M73080 <P>Hi,</P> <P>I believe that you are referring to the Loading Plot, where the circle represents the maximum possible contribution of each variable (i.e., Distance from zero = 1). The length of the vectors (arrows) represents the relative contribution of each variable to the principal components displayed.</P> <P>Best,</P> <P>TS</P> Sun, 15 May 2022 18:50:34 GMT https://community.jmp.com/t5/Discussions/scores-plot-for-PCA/m-p/486970#M73080 Thierry_S 2022-05-15T18:50:34Z