For the given 5 values 24, 18, 33, 42, 24; the 3-year moving averages are:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 25, 31, 33
A 3-year moving average is the mean of three consecutive values; the window then moves one value forward. Five values give three averages.
\( \displaystyle \frac{24 + 18 + 33}{3} = \frac{75}{3} = 25 \)
\( \displaystyle \frac{18 + 33 + 42}{3} = \frac{93}{3} = 31 \)
\( \displaystyle \frac{33 + 42 + 24}{3} = \frac{99}{3} = 33 \)