Linear regression is a statistical method used to understand the relationship between an outcome variable and one or more explanatory variables. It works by fitting a regression line through the ...

Example: If we have a regression equation \ (Sales = \beta_0 + \beta_1 Advertising\), then we can use \ (\beta_1\) to better understand the impact of our spending on advertising on sales. Obviously, ...

Mollie MacGregor, Kaye Stacey, Cognitive Models Underlying Students' Formulation of Simple Linear Equations, Journal for Research in Mathematics Education, Vol. 24, No. 3 (May, 1993), pp. 217-232 ...