An analyst experiments with different STL smoothing windows for monthly electricity consumption. Which statement is incorrect?

Question

Accepted Answer

Changing the seasonal smoothing window changes the frequency at which observations were originally recorded.

Answer

Increasing the trend smoothing window generally creates a smoother trend estimate.

Answer

Very large smoothing windows may conceal meaningful local changes in the corresponding component.

Answer

A smaller seasonal smoothing window can allow seasonal estimates to vary more rapidly.

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