运用()所求得的移动平均值,存在着滞后偏差,特别是在时间序列资料呈现出线性变化时,移动平均值总是落后于实际数据的变化。
A.一次移动平均法
B.二次移动平均法
C.简单移动平均法
D.加权移动平均法
正确答案是A
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