Chapter 52

Incorporating qualitative factors into multiple regression

Questions answered in this chapter:

  • How can I predict quarterly US auto sales?

  • How can I predict US presidential elections?

  • How can I use the TREND function to easily make forecasts from a multiple-regression equation?

  • How can I use the LOGEST and GROWTH functions to model multiplicative trend and seasonality?

The first example of multiple regression in Chapter 51, “Introduction to multiple regression,” forecasted the monthly cost of plant operations by using the number of units of each product manufactured at the plant. Because you can quantify exactly the amount of a product produced at a plant, you can refer to the units produced of Product A, Product B, and Product C ...

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