Question: Use the sales data given below to determine: (a) the least squares trend line, and (b) the predicted value for both 2021 and 2022 sales.

Use the sales data given below to determine: (a) the least squares trend line, and (b) the predicted value for both 2021 and 2022 sales.

Year Sales (Units)

2014 100

2015 110

2016 122

2017 130

2018 139

2019 152

2020 165

To minimize computations, transform the value of x (time) to simpler numbers. In this case, designate year 2014 as year 1, 2015 as year 2, etc.

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