Nearby the sequence origin, actual values and fitted values have a very high fitting precision.
在序列原点附近，拟合值与实际值的拟合程度非常高。
An optional data frame in which to look for variables with which to predict. If omitted, the fitted values are used.
一个可选的数据框寻找与预测的变数。如果省略，用来拟合值。
This is obvious from Graph 3 which shows the average fitted values of four of these models, along with the trimmed mean measure of underlying inflation.
从图3显示的其中四个这种模型的平均拟合值，与截尾平均法测量值在一起的对比，可以看出这是非常明显的。
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