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ACC 406 Lecture Notes - Lecture 3: Cost Driver, Fixed Cost, Variable Cost

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School
Ryerson University
Department
Accounting
Course
ACC 406
Professor
Cheryl Dyson

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Document Summary

Cost behavior is the general term to describe whether a cost changes when the level of activity changes. A fixed cost is a cost that does not change in total as activity changes. A variable cost increases in total with an increase in activity and decreases in total in with a decrease in activity. A cost driver is a key determinant of cost behavior. A cost driver is a casual measurement that causes costs to change. A cost is fixed or variable with respect to some output measure or cost driver. First we determine the underlying business activity and ask ourselves, what causes the cost of this activity to go up or down? . The relevant range is the range of output over which an assumed cost relationship is valid for the normal operations of a firm. The relevant range limits the cost of relationship to the range of operations that the firm normally expects to occur.

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Related Questions

Why is it important to identify the most appropriate costdrivers for a particular product?

A) so managers can identify the activities necessary tomanufacture a product

B) so managers can control product costs better

C) so managers can predict product costs better and make betterdecisions

D) B and C

Answer:

Cost drivers are ________.

A) the different functions in the value chain

B) different types of functional areas in the firm

C) measures of activities that require the use of resources andthereby cause costs

D) different types of cost calculations

Answer:

Within the relevant range, the total amount of ________ costchanges in direct proportion to changes in the cost driver. Withinthe relevant range, the total amount of ________ cost does notchange in direct proportion to changes in the cost driver.

A) fixed; variable

B) variable; fixed

C) step; mixed

D) mixed; step

Answer:

What happens when the cost-driver level increases within therelevant range?

A) Total fixed costs remain unchanged.

B) Fixed costs per unit of cost driver increase.

C) Total variable costs decrease.

D) Variable costs per unit of cost driver increase.

Answer:

Which of the following costs is a fixed cost?

A) cost of dairy ingredients used to produce ice cream

B) depreciation expense on factory building

C) fuel used by delivery trucks

D) labor wages of workers who mix dairy ingredients to make icecream

1. Which one of the following refers to a cost that remains the same as the volume of activity decreases within the relevant range?

A. Average cost per unit.

B. Variable cost per unit.

C. Unit fixed cost.

D. Total variable cost.

2. The relevant range refers to the activity levels over which

A. Cost relationships hold constant.

B. Costs fluctuate.

C. Production varies.

D. Relevant costs are incurred.

3. When identifying fixed and variable costs, which one of the following is a typical assumption concerning cost behavior?

A. General and administrative costs are assumed to be variable costs.

B. Cost behavior is assumed to be realistic for all levels of activity from zero to maximum capacity.

C. Total costs are assumed to be linear when plotted on a graph.

D. The relevant time period is assumed to be 5 years.

4. A management accountant is about to prepare graphs of total variable cost and per-unit variable cost for use in a short-term planning model. Dollars will be depicted on the vertical axis; activity will be shown on the horizontal axis. How will these graphs appear under completion?

Total Variable Cost; Per-Unit Variable Cost

A. Straight line, sloping upward to the right; Straight line, parallel to the horizontal axis

B. Curvilinear, sloping upward to the right; A line that basically parallels the horizontal axis, first decreasing and then increasing

C. Straight line, sloping upward to the right; Straight line, sloping upward to the right

D. Straight line, parallel to the horizontal axis; Straight line, sloping upward to the right

5. A company has found that its total electricity cost has both a fixed component and a variable component within the relevant range. The variable component seems to vary directly with the number of units produced. Which one of the following statements concerning electricity cost is incorrect?

A. The total electricity cost will increase as production volume increases.

B. The total electricity cost per unit of production will increase as production volume increases.

C. The variable electricity cost per unit of production will remain constant as production volume increases.

D. The fixed electricity cost per unit of production will decline as production volume increases.

________ is the excess of sales over the cost of goods sold.

A) Gross margin

B) Contribution-margin ratio

C) Variable-cost ratio

D) Contribution margin

Answer:

Which statement is FALSE?

A) Each different sales-mix of products has a differentbreak-even point.

B) Changes in the sales-mix of products sold affects a company'snet operating profit.

C) Changes in the sales-mix of products sold affects a company'scontribution margin.

D) If the sales-mix of products sold changes, the break-evenpoint does not change.

Answer:

With mixed costs, the ________ element is unchanged over therelevant range and the ________ element varies proportionately withcost-driver activity.

A) variable cost; fixed cost

B) fixed cost; variable cost

C) fixed cost; step cost

D) step cost; variable cost

Answer:

The sales price is $30 per unit, the contribution margin is $8per unit and total fixed costs are $32,000. What is the break-evenpoint in units?

A) 857

B) 1,200

C) 2,000

D) 4,000

Answer:

If the selling price per unit increases, what is the effect onthe break-even point? (Assume no other changes.)

A) The break-even point increases.

B) The break-even point decreases.

C) The break-even point remains the same.

D) The break-even point is zero.