配对设计的两组计量资料样本均数差别的检验A．只能用配对，检验

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问题单项选择题

配对设计的两组计量资料样本均数差别的检验

A．只能用配对，检验

B．只能用配伍组方差分析

C．配对，检验与配伍组方差分析的结果一致

D．只能用成组t检验

E．只能用单因素方差分析

答案

参考答案：C

填空题

已知抛物线y=x²﹣2x-3的图象与x轴交于A，B两点，在x轴上方的抛物线上有一点C，使△ABC的面积为10，则C点坐标为( )

选择题

I suggested to my father that we _____ to Shanghai for a holiday this summer, but the expression on his

face suggested that he _____ to it. [ ]

A. go; shouldn't agree

B. would go; shouldn't agree

C. go; didn't agree

D. would go; didn't agree