题目内容
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[主观题]
下述哪一个是被试内设计的缺点?() A.the variability due to participants can not be estimated stalis
下述哪一个是被试内设计的缺点?( )
A.the variability due to participants can not be estimated stalistically
B.treatment ordel effects
C.a large number of participants is required
D.both a and c
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