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Time Series & Trend · Question 52 of 68

What is the dealer's 3-year moving average placed against 2023?

Question 52

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 2023?

Options for question 52

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. The average placed against 2023 is the mean of 2022, 2023 and 2024.

  2. 51+54+603=55\frac{51 + 54 + 60}{3} = 55.

Worth noting

57 averages only 2023 and 2024; a 3-year average centred on 2023 takes in 2022 too.

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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