Who is knowledgeable about linear regression model?

Assignment 1: Discussion

You are working with a company selling building material to builders. You predict the quarterly purchases of customers based on their current purchases by using a linear regression model. These predictions, however, are not very accurate. Discuss at least three reasons why these predictions may not be accurate and offer three ways in which you can increase the likelihood of accurately predicting your customers’ purchases.

Teacher is looking for a substantive discussion and not just advantages and disadvantages
Post your response to the Discussion Area by Saturday, July 5, 2014.