EXERCISE 5-2 (45 MINUTES)

2. a. See the scattergraph on the following page. b. (Note: Students’ answers will vary due to the imprecision of this method of estimating variable and fixed costs.) Total cost at 5 units shipped per month [a point fal-ling on the regression line in (a)] ... $2,000Less fixed cost element (intersection of the Y axis) .... 1,000Variable cost element ... $1,000$1,000 ÷ 5 units = $200 per unit. The cost formula is $1,000 per month plus $200 per unit shipped or Y = $1,000 + $200X. where X is the number of units shipped.