Franklin Computer Services, Inc. has been in business for six months. The following are basic operating data for that period:

	Month
	July			Aug.			Sept.			Oct.			Nov.			Dec.
Service hours		118			134			262			420			322			328
Revenue	$	6,254		$	7,102		$	13,886		$	22,260		$	17,066		$	17,384
Operating costs	$	4,260		$	5,260		$	7,150		$	11,100		$	9,130		$	10,530

Required

What is the average service revenue per hour in each month and the overall average for the six-month period?

Use the high-low method to estimate the total monthly fixed cost and the variable cost per hour.

Determine the average contribution margin per hour.