某医师在研究工作中分析两个变量的相关回归关系，算得的统计量是：∑(x-
)²=45.2，∑(y-
)²=78.8，∑(x-
) (y-
)＝-55.6，∑(
)²=82.7，这里有错误的是统计量中出现了
A．∑(x-
)(y-
)＝-55.6
B．∑(x-
)²＝45.2＜∑(y-
)²=78.80
C．∑(
)²＝82.7＞∑(y-
)²=78.8
D．∑(x-
)²=45.2＜∑(
)²＝82.7
E．∑(x-
)²＝45.2＞∑(x-
) (y -
)＝-55.6