Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
st: RE: what's the big T in the t-test results
From
"Nick Cox" <[email protected]>
To
<[email protected]>
Subject
st: RE: what's the big T in the t-test results
Date
Tue, 15 Jun 2010 21:17:11 +0100
T is the random variable of which t is the sample realisation.
Alternatively, Student's t test is for determining whether a lady can
distinguish between two sets of cups of tea in which milk is poured
before or after the tea. (Garbled history of statistics.) (If no ladies
are available, use students instead.)
Nick
[email protected]
Airey, David C
What are the capital Ts in the results printed out after using ttest,
e.g.,
Pr(T < t), Pr(|T| > |t|), or Pr(T > t)
for the one-tailed and two-tailed HAs? I interpret the p values as the
probability that the sample mean came from the null sampling
distribution, but what is the English for Pr(T > t)?
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/