Create quality control charts for round-trip fuel usage

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Reference no: EM13903414

Quality control. Eastsound operates daily round-trip flights between two cities using a fleet of three planes: the Viper, the Tiger, and the Eagle.

The budgeted quantity of fuel for each round trip is the average fuel usage, which over the past 12 months has been 150 gallons. Eastsound has set the upper control limit at 180 gallons and the lower control limit at 130 gallons. The operations manager received the following report for round-trip fuel usage for the period by the three planes.

Trip	Viper	Tiger	Eagle
1	156	155	146
2	141	141	156
3	146	144	167
4	152	161	156
5	156	138	183
6	161	170	177
7	167	149	189
8	186	159	171
9	173	152	176
10	179	140	185

a. Create quality control charts for round-trip fuel usage for each of the three planes for the period. What inferences can you draw from them?

b. Some managers propose that Eastsound present its quality control charts in monetary terms rather than in physical quantities (gallons). What are the advantages and disadvantages of using monetary fuel costs rather than gallons in the quality control charts?

Reference no: EM13903414

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