leon22222 发表于 2010-6-24 11:58 
5# BraveMadMan
请问t-test是指什么含义
看 [url]http://www.stat.lsu.edu/faculty/geaghan/EXST7005/TTEST2b.htm[/url]
其中的
T:Mean=0 -1.3203 Pr>|T| 0.1971就是你想要的t-test结果。
具体指这段:
After the creation of DATA ONE for the two-sample t-test, we find out that we actually have paired data, and decide to modify the calculation and get a paired t-test (without changing the initial program). To do this we add, following the initial program segment,DATA ONE; SET ONE:
/*This allows us to modify the dataset ONE*/
DIFF = FINAL - MIDTERM; RUN;
PROC UNIVARIATE DATA=ONE NORMAL; VAR DIFF; RUN;
The output for these statements is given below.
Scores in an English course
Univariate Procedure
Variable=DIFF
Moments
N 30 Sum Wgts 30
Mean -2.8 Sum -84
Std Dev 11.61568 Variance 134.9241
Skewness 0.052006 Kurtosis -0.9551
USS 4148 CSS 3912.8
CV -414.846 Std Mean 2.120724
T:Mean=0 -1.3203 Pr>|T| 0.1971
Num ^= 0 30 Num > 0 12
M(Sign) -3 Pr>=|M| 0.3616
Sgn Rank -58.5 Pr>=|S| 0.2345