[統計] 好題分享 政大96
注意:原題有稍做修改。
某人以性別為預測變項(男=0,女=1),身高為效標變項進行迴歸預測,男生50人平均身高
175,標準差10,女生50人平均身高165,標準差10,請問回歸式?R平方?
解答:
y^=-10X+175
r平方=0.2
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