Year Season Sales 2018 Winter 40 2018 Spring 29 2018 Summer 31 2018 Fall 40 2019 Winter 102 2019 Spring 87 2019 Summer 96 2019 Fall 132 2020 Winter 105 2020 Spring 93 2020 Summer 105 2020 Fall 117 2021 Winter 141 2021 Spring 39 2021 Summer 114 2021 Fall 123 What is the slope of the trend equation obtained by linear regression? Round to two decimal digits. What is the intercept of the trend equation obtained by linear regression? Round to two decimal digits. What is the seasonal index for Spring? Round to two decimal digits. The quarter number for Winter of 2018 is 1. What is the quarter number for Spring of 2025? What is the trend based forecast for Spring of 2025. Round to a whole number. What is the seasonally adjusted trend based forecast for Spring of 2025?

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter13: Regression And Forecasting Models
Section13.7: Exponential Smoothing Models
Problem 28P: The file P13_28.xlsx contains monthly retail sales of U.S. liquor stores. a. Is seasonality present...
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Year Season Sales
2018 Winter 40
2018 Spring 29
2018 Summer 31
2018 Fall 40
2019 Winter 102
2019 Spring 87
2019 Summer 96
2019 Fall 132
2020 Winter 105
2020 Spring 93
2020 Summer 105
2020 Fall 117
2021 Winter 141
2021 Spring 39
2021 Summer 114
2021 Fall 123

What is the slope of the trend equation obtained by linear regression? Round to two decimal digits.

What is the intercept of the trend equation obtained by linear regression? Round to two decimal digits.

What is the seasonal index for Spring? Round to two decimal digits.

The quarter number for Winter of 2018 is 1. What is the quarter number for Spring of 2025?

What is the trend based forecast for Spring of 2025. Round to a whole number.

What is the seasonally adjusted trend based forecast for Spring of 2025

Please do not use excel to find the slope and intercept, thank you so much!

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