Hi.
I'd like to do a t-test to compare the Delta values of items with Crit=1
with Delta values of items with Crit=0. What is the t.test syntax?
It should produce a result like this below (I can't get in touch with the
person who originally did this for me)
Welch Two Sample t-test
data: t1$Delta by Crit
t = -3.4105, df = 8.674, p-value = 0.008173 alternative hypothesis: true
difference in means is not equal to 0
95 percent confidence interval:
-0.04506155 -0.00899827
sample estimates:
mean in group FALSE mean in group TRUE
0.03331391 0.06034382
Thanks.
------------------------------------
Steven F. Freeman * Center for Organizational Dynamics * University of
Pennsylvania * (215) 898-6967 * Fax: (215) 898-8934 * Cell: (215) 802-4680 *
[EMAIL PROTECTED] * http://center.grad.upenn.edu/faculty/freeman.html
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