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Time Series & Trend · Question 49 of 68

What is the dealer's 3-year moving average placed against 2021?

Question 49

EasyOriginal question

A dealer's scooter sales, in hundreds, were 42, 45, 51, 54 and 60 in the five years 2020 to 2024.

What is the dealer's 3-year moving average placed against 2021?

Options for question 49

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. The average placed against 2021 is the mean of 2020, 2021 and 2022.

  2. 42+45+513=46\frac{42 + 45 + 51}{3} = 46.

Worth noting

50.4 is the mean of all five years.

Concept
A 3-year moving average
Typical time
90 s
Your time
—
The rule this testsA straight-line trend by least squares
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