标题: Stats10X assignment help TT [打印本页] 作者: karissah 时间: 2010-7-26 18:02:05 标题: Stats10X assignment help TT
stats10x 的assignment 最近出来了~ 本来想提前做一下so work wont pile up later... 但是不幸地stuck了~~
请问各位大大,how do you determine a controlled group in an experiment?
like 老师上课的时候跟我们说placebo is a controlled group (coursebook里的例题)。但是他好像也没说为什么= =
so ya ><
....我才刚开始写,你比我写的快....
....这次的ASSIGN里面3个STUDY,1 AND 3 HAS A CONTROL GROUP,因为并没有讲到药效之类的东西所以没有PLACEBO EFFECT...
因为CONTROL GROUP是GROUP THAT MAY RECIVE NO TREATMENT OR PLACEBO,所以..
STUDY 1-CONTROL GROUP IS THE REMAINING BAKERIES WITH NO DISCOUNT/SPECIAL OFFERED.
STUDY 3-CONTROL GROUP IS THE GROUP OF PEOPLE WHO DID NOT DRINK ALCOHOL.
后面貌似我有不会的,可以一起交流...作者: karissah 时间: 2010-7-26 18:49:27