Consider the following data:
| Year: | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
| Annual Sales: (In Lakhs Rs.) | 3 | 7 | 2 | 6 | 4 | 8 |
Then 4- yearly moving averages are:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 4.5, 4.75, 5
A 4-yearly moving average is the mean of four consecutive values, moving forward one year at a time.
\( \displaystyle \frac{3+7+2+6}{4}=4.5 \)
\( \displaystyle \frac{7+2+6+4}{4}=4.75 \)
\( \displaystyle \frac{2+6+4+8}{4}=5 \)
So the 4-yearly moving averages are 4.5, 4.75 and 5.