<div dir="ltr"><div><div><div><div>Has anybody answered your question?<br><br><a href="http://www.itl.nist.gov/div898/handbook/eda/section3/eda352.htm">http://www.itl.nist.gov/div898/handbook/eda/section3/eda352.htm</a><br></div>See the definition of the confidene interval.<br><br> tval_opt =True ; p & t-value<br> pt = ttest(aveX,varX,sX, aveY,varY,sY, iflag, tval_opt)<br></div> print(pt)<br><br></div>The 2nd element is the t-value<br><br></div>HTH<br><div><br><div><div><br><br><div><br></div></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Mar 31, 2017 at 3:49 PM, Andrew Kren - NOAA Affiliate <span dir="ltr"><<a href="mailto:andrew.kren@noaa.gov" target="_blank">andrew.kren@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">Dear ncl-talk,<div><br></div><div>I'm using the function ttest in NCL to compute the two-tailed significance of a set of correlations. I plot the correlations (anomaly) as a time series as most people do. I compute the difference between the two and want to also plot an envelope that encompasses the 95% confidence range for the range of values. Is there a way to determine this from the ttest? <span class="HOEnZb"><font color="#888888"><br clear="all"><div><br></div>-- <br><div class="m_7185588501146775571gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div>Andrew Kren, PhD<br>
Research Scientist I, Global Observing Systems Analysis (GOSA) Group<br>
NOAA ESRL Global Systems Division (Rm 3C515)<br>
325 Broadway, Boulder, CO 80305<br>
<a href="tel:%28303%29%20497-5418" value="+13034975847" target="_blank">(303) 497-5418</a><span><font color="#888888"><br>
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