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Time Series & Trend · Question 42 of 68

What is the first centred 4-quarter moving average of the resort's guests?

Question 42

MediumOriginal question

A hill resort's guests, in hundreds, for the four quarters of two years were: year 1: 12, 30, 8, 20; year 2: 14, 33, 9, 24.

What is the first centred 4-quarter moving average of the resort's guests?

Options for question 42

Show the answer and explanation
CorrectNot quiteAnswer B

Correct answer: B

Explanation

  1. The first two 4-quarter totals are 70 and 72.

  2. Centred average =70+728=17.75= \frac{70 + 72}{8} = 17.75.

Worth noting

17.5 is the first 4-quarter average, 704\frac{70}{4}, before centring.

Concept
Centring a 4-quarter moving average
Typical time
120 s
Your time
—
The rule this testsTrend by moving averages
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