单项选择题
In the ____ period, Charles Dickens believed that all the evils of the capitalist world would be remedies of only men who behaved to each other with kindliness, justice, and sympathetic understanding.
A、 first
B、 second
C、 third
D、 fourth
A.
A、
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单项选择题
一组成组数据资料,每组具有10个观察值。该配对资料的自由度是()
A.20
B.19
C.18
D.9
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单项选择题
多重比较是对各个处理间的差异显著性检验的一种方法,它是对各处理的()间进行多重比较。
A.统计数
B.变数
C.F值
D.平均数
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