Refer to the gasoline sales time series data in the given table. Refer to the ga

Question

Refer to the gasoline sales time series data in the given table.

Refer to the gasoline sales time series data in the given table.

Week Sales (1,000s of gallons) 1 17 2 23 3 14 4 25 5 17 6 16 7 22 8 19 9 21 10 19 11 17 12 23 (a) Compute four-week and five-week moving averages for the time series. If required, round your answers to two decimal places.
Week
Sales 4 Period
Moving Average 5 period
Moving Average 1 17 2 23 3 14 4 25 5 17 6 16 7 22 8 19 9 21 10 19 11 17 12 23 (b) Compute the MSE for the four-week and five-week moving average forecasts. If required, round your final answers to three decimal places. MSE for four-week moving average = MSE for five-week moving average = (c) What appears to be the best number of weeks of past data (three, four, or five) to use in the moving average computation? Consider that the MSE for the three-week moving average is 11.889. - Select your answer -ThreeFourFiveItem 18

Explanation / Answer

a)

b)

for 4 period :

for 5 period:

hence  MSE for four-week moving average = 8.961

MSE for five-week moving average = 5.434

c)

for MSE for r five-week moving average is smallest ; one should use 5 week moving average

Week Sales (1,000s of gallons) 4 period 5 period 1 17 2 23 3 14 4 25 5 17 19.75 6 16 19.75 19.2 7 22 18 19 8 19 20 18.8 9 21 18.5 19.8 10 19 19.5 19 11 17 20.25 19.4 12 23 19 19.6

Related Questions

Navigate

• Browse (All)
• Browse R
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.