In addition, the Mann‐Whitney U test is, in exceptional
circumstances, more powerful than the t‐test. Indeed, it is
more powerful in the detection of a difference on the extent
of the possible differences between populations’ averages
than the t‐test when a small manpower is associated with a
small variance (Zimmerman, 1987). On the other hand,
when the sample size is similar or when the smallest
manpower has the greatest variance, the t‐test is more
powerful on all the extent of the possible differences
(Zimmerman).
In addition, the Mann‐Whitney U test is, in exceptional circumstances, more powerful than the t‐test. Indeed, it is more powerful in the detection of a difference on the extent of the possible differences between populations’ averages than the t‐test when a small manpower is associated with a small variance (Zimmerman, 1987). On the other hand, when the sample size is similar or when the smallest manpower has the greatest variance, the t‐test is more powerful on all the extent of the possible differences (Zimmerman).
การแปล กรุณารอสักครู่..
![](//thimg.ilovetranslation.com/pic/loading_3.gif?v=b9814dd30c1d7c59_8619)