Multiple Choice
Which of the following best describes what may be used when measuring the seasonal and random variation of a time series with no cyclical effect?
A) The trend value ŷ.
B) The ratio of the time series divided by the predicted values.
C) The ratio of the time series divided by the moving average and the ratio of the time series divided by the predicted values.
D) The ratio of the time series divided by the moving average.
Correct Answer:

Verified
Correct Answer:
Verified
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