<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">You are right, I followed the link (you sent) but also I saw ttest function. So I wonder if I have to use ttest function after rtest instead of using the equation.<div><br><div><div>Thank you </div><div>Sun-</div><div><div><div>On Mar 12, 2015, at 12:44 PM, Dennis Shea <<a href="mailto:shea@ucar.edu">shea@ucar.edu</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr">Would it not be:<br> <a href="https://www.ncl.ucar.edu/Document/Functions/Built-in/rtest.shtml">https://www.ncl.ucar.edu/Document/Functions/Built-in/rtest.shtml</a><br><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Mar 11, 2015 at 8:57 PM, Sunmin Park <span dir="ltr"><<a href="mailto:mireiyue@gmail.com" target="_blank">mireiyue@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 style="word-wrap:break-word">Dear NCL users<div><br></div><div>I got cross correlation between two variables (two dimensions: lat, time and at lag 0) using escorc function then did rtest and ttest. I did rtest first and then used the equation</div><div><span style="background-color:rgb(255,255,255);line-height:16px">t = </span><em style="line-height:16px;margin:0px;padding:0px">r</em><span style="background-color:rgb(255,255,255);line-height:16px">*sqrt((</span><em style="line-height:16px;margin:0px;padding:0px">Nr</em><span style="background-color:rgb(255,255,255);line-height:16px">-2)/(1-</span><em style="line-height:16px;margin:0px;padding:0px">r^2</em><span style="background-color:rgb(255,255,255);line-height:16px">))</span></div><div>to do ttest. Is it correct way to do ttest? </div><div> </div><div>If it is not should I use ttest function separately from rtest?</div><div><br></div><div>Thank you in advance,</div><div>Sun-</div><div> </div></div><br>_______________________________________________<br>
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