[SAS] TTEST 결과 분석

Method	Variances	DF	t Value	Pr > |t|
Pooled	Equal	674	-10.30	<.0001
Satterthwaite	Unequal	673.47	-14.24	<.0001

Some people use the simple rule here:

• When the p-value (shown under "Pr>F") is greater than 0.05, then the variances are equal then read the "Pooled" section of the result
• When the p-value (shown under "Pr>F") is no more than 0.05, then the variances are unqueal then read the "Satterthwaite" section of the result

(출처 : http://www.stat.purdue.edu/~tqin/system101/method/method_two_t_sas.htm)