<div dir="ltr"><div><div><div><a href="https://en.wikipedia.org/wiki/Coefficient_of_determination">https://en.wikipedia.org/wiki/Coefficient_of_determination</a><br><br><br>===<br></div><br><br><a href="http://www.ncl.ucar.edu/Document/Functions/Contributed/regline_stats.shtml">http://www.ncl.ucar.edu/Document/Functions/Contributed/regline_stats.shtml</a><br><br></div>see the example<br><br></div>[SNIP]<br><pre> ; <b>ANOVA</b> information: SS=>Sum of Squares
SST : 4823324 ; Total SS: sum((Y-Yavg)^2)
SSE : 50871.91 ; Residual SS: sum((Yest-Y)^2)
SSR : 4772452 ; sum((Yest-Yavg)^2)<br></pre><pre>[SNIP<br> r2 : 0.989453 ; square of the Pearson correlation coefficient
r : 0.9947125 ; multiple (overall) correlation: sqrt(r2)
r2a : 0.9887938 ; adjusted r2... better for small </pre><pre>[SNIP]<br><br></pre><pre>See the Wikipedia article<br><br>r2 = 1 - (SSE/SST)<br>r2 = 1 - (50871.91/4823324.0)<br>r2 = 0.989453<br></pre><pre><br></pre><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 18, 2016 at 6:37 PM, mark vogel <span dir="ltr"><<a href="mailto:mdvogelii@gmail.com" target="_blank">mdvogelii@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div style="font-size:12.8px">Do you have a ncl code to calculate R2 value instead of express correlation with rc?</div><div style="font-size:12.8px">I try to follow Dennis shea talk in ncl forum but I got multiple variance values coming out not only one value.</div><div style="font-size:12.8px"><a href="https://www.ncl.ucar.edu/Support/talk_archives/2009/2202.html" style="font-size:12.8px" target="_blank">https://www.ncl.ucar.edu/Support/talk_archives/2009/2202.html</a><br></div><div style="font-size:12.8px">Thanks</div><div style="font-size:12.8px">Jam</div></div>
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