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让你看清楚ppt
A*B 9 A*C 27 A*D 9 B*C 3 B*D 1 C*D 3 误差 733 合计 799 S = RSq = % RSq（调整） = % 13 Set acceptance Pvalue = Treated D as continuous variable 14 131 , 3 30 . 9 1 6 2