【多选题】【消耗次数:1】
在直线相关和回归分析中?
据同一资料,相关系数只能计算一个
据同一资料,相关系数可以计算两个
据同一资料,回归方程只能配合一个
据同一资料,回归方程随自变量与因变量的确定不同,可能配合两个
回归方程和相关系数均与自变量和因变量的确定无关
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相关题目
【判断题】 两个变量中不论假定那个变量为自变量x,那个为因变量y,都只能计算一个相关系数。
①  正确
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①  回归系数大于零则相关系数大于零
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