[ncl-talk] computing confidence interval from ttest

Andrew Kren - NOAA Affiliate andrew.kren at noaa.gov
Fri Mar 31 15:49:17 MDT 2017


Dear ncl-talk,

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?

-- 
Andrew Kren, PhD
Research Scientist I, Global Observing Systems Analysis (GOSA) Group
NOAA ESRL Global Systems Division (Rm 3C515)
325 Broadway, Boulder, CO 80305
(303) 497-5418
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