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Refer again to the gasoline sales time series data in the following table. Sales (1000s of gallons) 18 24 19 24 17 16 22 19 24 21 16 22 Week 1 2 3 4 5 6 7 8 9 10 11 12 a. Using a weight of 1/2 for the most recent observation, 1/3 for the second most recent, and 1/6 for third most recent, compute a three-week weighted moving average for the time series. Use rounded for two decimal places values for intermed calculations. Use minus sign for negative values. Week 1 2 3 4 5 6 7 8 9 10 11 12 Sales 18 24 19 24 17 16 22 19 24 21 16 22 Weighted Moving Average Forecast Forecast Error Total 1 I I 1 (Error)2

Refer again to the gasoline sales time series data in the following table. Sales (1000s of gallons) 18 24 19 24 17 16 22 19 24 21 16 22 Week 1 2 3 4 5 6 7 8 9 10 11 12 a. Using a weight of 1/2 for the most recent observation, 1/3 for the second most recent, and 1/6 for third most recent, compute a three-week weighted moving average for the time series. Use rounded for two decimal places values for intermed calculations. Use minus sign for negative values. Week 1 2 3 4 5 6 7 8 9 10 11 12 Sales 18 24 19 24 17 16 22 19 24 21 16 22 Weighted Moving Average Forecast Forecast Error Total 1 I I 1 (Error)2

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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Using a weight of 1/2 for the most recent observation, 1/3 for the second most recent, and 1/6 for third most recent, compute a three-week weighted moving average for the time series. Use rounded for two decimal places values for intermediate calculations. Use minus sign for negative values.

Refer again to the gasoline sales time series data in the following table. Week 1 2 3 4 5 6 7 8 9 10 11 12 Week 1 2 3 5 6 7 8 9 10 11 12 Sales 18 24 19 24 17 a. Using a weight of 1/2 for the most recent observation, 1/3 for the second most recent, and 1/6 for third most recent, compute a three-week weighted moving average for the time series. Use rounded for two decimal places values for intermediate calculations. Use minus sign for negative values. 16 22 19 24 21 16 Sales (1000s of gallons) 22 18 NA NANGN 24 19 24 17 16 22 19 24 21 16 22 Weighted Moving Average Forecast Forecast Error Total (Error)²
Transcribed Image Text:Refer again to the gasoline sales time series data in the following table. Week 1 2 3 4 5 6 7 8 9 10 11 12 Week 1 2 3 5 6 7 8 9 10 11 12 Sales 18 24 19 24 17 a. Using a weight of 1/2 for the most recent observation, 1/3 for the second most recent, and 1/6 for third most recent, compute a three-week weighted moving average for the time series. Use rounded for two decimal places values for intermediate calculations. Use minus sign for negative values. 16 22 19 24 21 16 Sales (1000s of gallons) 22 18 NA NANGN 24 19 24 17 16 22 19 24 21 16 22 Weighted Moving Average Forecast Forecast Error Total (Error)²
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