The multiple linear regression analysis is one of the most reliable and accurate tools for cost estimating. The validity of the analysis depends on the relevance of the independent variables selected.

Please respond to the following:

Discuss what independent variables you would select to estimate the maintenance costs for a manufacturing company using multiple linear regression analysis.

Explain why you selected these independent variables. What are other variables you considered, but decided not to include in your analysis? Explain why and defend your opinion.