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Part 2: The Atlantic Tire and Muffler Company introduced a new line of all-season tires in January 2018. This line proved very popular and there
Part 2: The Atlantic Tire and Muffler Company introduced a new line of all-season tires in January 2018. This line proved very popular and there has been strong growth in sales. The table below shows the sales numbers (in 1000s of units) by three-month period in 2018 and 2019. Year 2018 2018 2018 2018 2019 2019 2019 2019 Period Jan-Mar Apr-Jun Jul-Sept Oct-Dec Jan-Mar Apr-Jun Jul-Sept Oct-Dec Sales 23 67 75 100 102 148 156 177 Question 2: Using linear regression, what is the slope of the best fit line to the sales data? Question 3: If the best fit line is used to forecast the sales in Apr-Jun 2021, what is the forecast sales figure (in 1000s of units)? Question 4: What is the forecast for sales in Apr-Jun 2021 (in 1000s of units) if the forecast is adjusted with an additive adjustment? Question 5: What is the forecast for sales in Apr-Jun 2021 (in 1000s of units) if the forecast is adjusted with a multiplicative adjustment? (Note. In the multiple choice quiz options for Questions 3, 4 and 5, the answer is rounded to the nearest whole number; however, it is recommended that you keep at least four significant figures while doing the calculation and round to a whole number at the end of the calculation).
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