Background Tobacco price is an important determinant of smoking behaviour. Using electronic point-of-sales (EPOS) data, this study assesses purchase price of factory-made cigarettes (FMC) and ...

Learn what residual standard deviation is, how to calculate it in regression analysis, and why it's crucial for measuring predictability and goodness-of-fit in data modeling.

Gordon Scott has been an active investor and technical analyst or 20+ years. He is a Chartered Market Technician (CMT). A line of best fit is a form of regression analysis that shows the relationship ...