Based on least squared regression method find the projections for the years 2021, 2022, and 2023. Plot the number of sold cars versus years (points graph) and show the trend line based on your projections.
Based on least squared regression method find the projections for the years 2021, 2022, and 2023. Plot the number of sold cars versus years (points graph) and show the trend line based on your projections.
Chapter4: Linear Functions
Section: Chapter Questions
Problem 28PT: For the following exercises, use Table 4 which shows the percent of unemployed persons 25 years or...
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- For the following list of data (number of sold cars in every year ) , apply “exponential smoothing with trend” for all the years below. (i.e find the Forecast including trend) :
---- case1 use : α= 0.01 and β = 0.3
---- case2 use: for α= 0.1 and β = 0.05
Calculate MAD for both cases
Decide which case values are better and why?
Assume trend is zero for the 2012 years.
Year |
Number of sold cars |
2012 |
110 |
2013 |
123 |
2014 |
160 |
2015 |
133 |
2016 |
151 |
2017 |
175 |
2018 |
189 |
2019 |
211 |
2020 |
255 |
- Based on least squared regression method find the projections for the years 2021, 2022, and 2023. Plot the number of sold cars versus years (points graph) and show the trend line based on your projections.
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