<div dir="ltr"><div><div><div>Hi Leslie,<br><br></div>The (Student) t-test used by NCL is identical to that in Numerical Recipies.<br><br></div>Se the chapter: <span style="font-weight:normal"><font size="2">Statistical Description of Data<br></font></span></div><span style="font-weight:normal"><font size="2"> section: </font></span>Do Two Distributions Have the Same Means or Variances<div><div><br><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Nov 7, 2016 at 9:26 AM, Lesley Smith - NOAA Affiliate <span dir="ltr"><<a href="mailto:lesley.l.smith@noaa.gov" target="_blank">lesley.l.smith@noaa.gov</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">Hi ncl-talk,<div>I was using your excellent function ttest with tval_opt = True </div><div>and I'm having a little trouble interpretting the t-values.</div><div>Should the t-values scale with the values of the statistical probabilities?</div><div>Is there a relevant formula or algorithm somewhere that I could look at?</div><div>Thanks for any tips!</div><div>-Lesley</div><div><br></div><div>------------------------------<wbr>------------------------------<wbr>-----------------------</div><div><div>Lesley L. Smith, Ph.D.</div><div>Affiliation: CIRES</div><div>Phone: <a href="tel:%28303%29%20497-6172" value="+13034976172" target="_blank">(303) 497-6172</a></div><div>E-mail: <a href="mailto:lesley.l.smith@noaa.gov" target="_blank">lesley.l.smith@noaa.gov</a></div><div>Attribution and Predictability Assessments Team</div><div>NOAA/ESRL Physical Sciences Division</div><div>R/PSD1 325 Broadway</div><div>Boulder, CO 80305</div></div></div>
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