For the given five values 17, 26, 20, 35, 44, the three years moving averages are :
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 21, 27, 33
A three-year moving average is the mean of each set of three consecutive values, moving one value at a time:
\( \displaystyle \frac{17 + 26 + 20}{3} = \frac{63}{3} = 21 \)
\( \displaystyle \frac{26 + 20 + 35}{3} = \frac{81}{3} = 27 \)
\( \displaystyle \frac{20 + 35 + 44}{3} = \frac{99}{3} = 33 \)