In time-series analysis, which source of variation can be estimated by the ratio-to-trend method?

 c. >>>>>>>>>>>>>>>>>>>>>> Seasonal 

I CHOOSE OPTION C ......................................................................

 c. Seasonal ..................................................

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Agree with my mentors

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C

1. In time-series analysis, which source of variation can be estimated by the ratio-to-trend method? The correct answer was: c. Seasonal. 

My answer is Option (C) SEASONAL

Agree with my mentor...Alex yazouri.

(C)               Thank You.