Exam kit question

This topic has 5 replies, 2 voices, and was last updated 5 years ago by John Moffat.

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March 6, 2021 at 5:04 pm #613784
sayedaamal
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Within time series analysis, which TWO of the following are concerned with long term movements/fluctuations in variables?

A. Seasonal
B. Cyclical
C Random
D. The trend

The answer in the exam kit is B and D. But I thought it was supposed to be B and C. Is the answer in the exam kit right?

Thank you.
March 7, 2021 at 9:18 am #613828
John Moffat
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The answer in the exam kit is correct. Seasonal and random variations are short-term variations.
March 7, 2021 at 11:27 am #613847
sayedaamal
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I was assuming that seasonal variation occurs frequently (maybe) in real life situations. Why are seasonal variations considered short-term?

Thank you 🙂
March 8, 2021 at 8:20 am #613911
John Moffat
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Because they change things in the short-term. They carry on changing things year after year, but they are short-term in their effect.
March 8, 2021 at 12:02 pm #613933
sayedaamal
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Oh! So it’s the changes in the short term. Thank you so much.
March 8, 2021 at 2:52 pm #613956
John Moffat
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You are welcome 🙂
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