For the given five values 16, 25, 19, 34, 46, the three years moving averages are
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 20, 26, 33
A three-year moving average is the mean of each run of three consecutive values, moving one value forward each time:
\( \displaystyle \frac{16 + 25 + 19}{3} = \frac{60}{3} = 20 \)
\( \displaystyle \frac{25 + 19 + 34}{3} = \frac{78}{3} = 26 \)
\( \displaystyle \frac{19 + 34 + 46}{3} = \frac{99}{3} = 33 \)
So the moving averages are 20, 26, 33.