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Time Series & Trend · Question 27 of 68

Question 27

EasyOriginal question

A firm's profits, in lakh rupees, for five years are 12, 15, 18, 15 and 21. What is the first 3-year moving average?

15

Correct answerYour answer

16

Correct answerYour answer

16.2

Correct answerYour answer

18

Correct answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer A

Correct answer: A

The first 3-year moving average is the mean of the first three values.
$\frac{12 + 15 + 18}{3} = 15$ , placed against the second year.

Worth noting

16.2 is the mean of all five years, not a moving average.

Concept: A 3-year moving average
Typical timeTypical: 60 s
Your timeYours: —

The rule this testsTrend by moving averages

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