If 35, 70, 36, 59, 62 is the given annual time series, then 3-yearly moving averages are
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 47, 55, 52.33
Each 3-yearly moving average is the mean of three consecutive values, starting one year later each time:
\( \displaystyle \frac{35+70+36}{3}=\frac{141}{3}=47 \)
\( \displaystyle \frac{70+36+59}{3}=\frac{165}{3}=55 \)
\( \displaystyle \frac{36+59+62}{3}=\frac{157}{3}=52.33 \)