Bob Jones owns a catering company that stages banquets and parties for both individuals and companies. The business is seasonal, with heavy demand during the summer months and year-end holidays and light demand at other times. Bob has gathered the following cost information from the past year:

Month	Labor Hours	Overhead Costs
January	2,500	$ 55,000
February	2,800	59,000
March	3,000	60,000
April	4,200	64,000
May	4,500	67,000
June	5,500	71,000
July	6,500	74,000
August	7,500	77,000
September	7,000	75,000
October	4,500	68,000
November	3,100	62,000
December	6,500	73,000
Total	57,600	$805,000

Required

1. Using the high-low method, compute the overhead cost per labor hour and the fixed overhead cost per month.
2. Bob has booked 2,800 labor hours for the coming month. How much overhead should he expect to incur?
3. If Bob books one more catering job for the month, requiring 200 labor hours, how much additional overhead should he expect to incur?
4. Bob recently attended a meeting of the local Chamber of Commerce, at which he heard an accounting professor discuss regression analysis and its business applications. After the meeting, Bob enlisted the professor"s assistance in preparing a regression analysis of the overhead data he collected. This analysis yielded an estimated fixed cost of $48,000 per month and a variable cost of $4 per labor hour. Why do these estimates differ from your high-low estimates, calculated in part (a)?