Oriole, Inc., has collected the following information on its cost of electricity:
Machine Hours Total Electricity Costs
January 500 $250
February 540 $300
March 370 $210
April 440 $220
May 680 $290
June 730 $330
July 330 $180
August 530 $260
September 230 $118
October 740 $340
November 860 $370
December 600 $340
(a) Identify the high and low points.
