若一组简单回归之随机样本为 n=5 得Σx=23, Σy=94, Σx2=143, Σy2=1994, Σxy=521。则斜率之 95%信赖区间为 A: (0.023, 1.221) B: (0.326, 3.221) C: (-3.256, 1.324) D: (1.185, 3.578)
若一组简单回归之随机样本为 n=5 得Σx=23, Σy=94, Σx2=143, Σy2=1994, Σxy=521。则斜率之 95%信赖区间为 A: (0.023, 1.221) B: (0.326, 3.221) C: (-3.256, 1.324) D: (1.185, 3.578)
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