The following data are the last three years of quarterly sales ($ thousands) for AmeriWeld. They are looking to forecast their sales for the upcoming year, 2021. Quarter 2018 Q1 Sales $ thousands (y) 15 1 Q2 2 14 Q3 3. 13 Q4 37 2019 Q1 Q2 Q3 Q4 2020 Q1 54 6 34 7 67 73 77 8 9 10 Q2 Q3 Q4 62 11 94 12 101 Click here for the Excel Data File. Data file should open in a new browswer window. Select "File" then "Save As" to download the file to your computer and be able to use it in Excel. a. Determine the regression equation. Regression equation: ŷ = (Round to 2 decimal places.) b. Determine the specific index for each quarter. 2 decimal places.) (Indexes should be in decimal form (e.g. 1.36 not 136). Rounded to Quarter Quarterly Index Q1 Q2 Q3 Q4 c. What are the estimated sales (forecast) for the next four quarters? (Values in $thousands. Round to 2 decimal places.) Quarter Forecasted Sales 2021-1 2021-2 2021-3 2021-3
The following data are the last three years of quarterly sales ($ thousands) for AmeriWeld. They are looking to forecast their sales for the upcoming year, 2021. Quarter 2018 Q1 Sales $ thousands (y) 15 1 Q2 2 14 Q3 3. 13 Q4 37 2019 Q1 Q2 Q3 Q4 2020 Q1 54 6 34 7 67 73 77 8 9 10 Q2 Q3 Q4 62 11 94 12 101 Click here for the Excel Data File. Data file should open in a new browswer window. Select "File" then "Save As" to download the file to your computer and be able to use it in Excel. a. Determine the regression equation. Regression equation: ŷ = (Round to 2 decimal places.) b. Determine the specific index for each quarter. 2 decimal places.) (Indexes should be in decimal form (e.g. 1.36 not 136). Rounded to Quarter Quarterly Index Q1 Q2 Q3 Q4 c. What are the estimated sales (forecast) for the next four quarters? (Values in $thousands. Round to 2 decimal places.) Quarter Forecasted Sales 2021-1 2021-2 2021-3 2021-3
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 23PPS
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Transcribed Image Text:The following data are the last three years of quarterly sales ($ thousands) for AmeriWeld. They are looking to forecast their sales for
the upcoming year, 2021.
Quarter
2018 Q1
Sales $ thousands (y)
15
1
Q2
2
14
Q3
3.
13
Q4
37
2019 Q1
Q2
Q3
Q4
2020 Q1
54
6
34
7
67
73
77
8
9
10
Q2
Q3
Q4
62
11
94
12
101
Click here for the Excel Data File. Data file should open in a new browswer window. Select "File" then "Save As" to download the file to
your computer and be able to use it in Excel.
a. Determine the regression equation.
Regression equation: ŷ =
(Round to 2 decimal places.)
b. Determine the specific index for each quarter.
2 decimal places.)
(Indexes should be in decimal form (e.g. 1.36 not 136). Rounded to
Quarter
Quarterly Index
Q1
Q2
Q3
Q4
c. What are the estimated sales (forecast) for the next four quarters?
(Values in $thousands. Round to 2 decimal places.)
Quarter
Forecasted Sales
2021-1
2021-2
2021-3
2021-3
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