There are only two methods to derive an estimated line of cost behavior; the high-low method and the scatter diagram.

Estimated Line of Cost Behavior

A projection or estimation of how costs change in relation to changes in an organization’s level of activity.

High-Low Method

An accounting technique used to estimate variable and fixed costs associated with a business activity by analyzing the highest and lowest levels of activity.

Scatter Diagram

A graphical representation used to show the relationship between two variables, often used in statistics and quality control to identify potential correlations.