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Account analysis

a metiod for analyzing cost behavior in which an account is classified as wither VC or FC based on the analyst's prior knowledge of how the cost in the account behaves


activity base

a measure of whatever causes the incurrence of a VC.


committed fixed costs

investments in facilities, equipment, and basic organizational structure that can't be significantly reduced even for short periods of time without making fundamental changes


contribution approach

an income statement format that organizes costs by their behavior. costs are separated into VC and FC categories rather than being separated according to organizational functions.


contribution margin

the amount remaining from sales revenues after all variable expenses have been deducted


cost structure

the relative proportion of fixed, variable, and mixed costs in an organization


dependent variable

a variable that responds to some casual factor; total cost is the dependent variable, as represented by the letter Y: Y=a+bX


discretionary fixed costs

those FC that arise from annual decisions by management to spend on certain FC items, such as advertising and research


engineering approach

a detailed analysis of cost behavior based on an industrial engineer's evaluation of the inputs that are required to carry out a particular activity and of the prices of those inputs


highlow method

a method of separating a mixed cost into its FC and VC elements by analyzing the change in cost between the high and low activity levels


independent variable

a variable that acts as a casual factor; activity is the independent variable as represented by the letter X: Y=a+bX


leastsquares regression method

a method of separating a mixed cost into its fixed and variable elements by fitting a regression line that minimizes the sum of the squared errors


linear cost behavior

cost behavior is said to be linear whenever a straight line is a reasonable approximation for the relation between cost and activity.


mixed cost

a cost that contains both VC and FC elements


Multiple regression

an analytical method required when variations in a dependent variabble are caused by more than one factor


_{R}2 (R squared)

a measure of goodness of fit in leastsquares regression analysis. it is the percentage of the variation in the dependent variable that is explained by variation in the independent variable


relevant range

the range of activity within which assumptions about VC and FC behavior are reasonably valid


stepvariable cost

the cost of a resource that is obtained in large chunks and that increases and decreases only in response to fairly wide changes in activity.
