Create a chart for individuals with a moving range chart

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Reference no: EM131261380

Other Variable Control Charts

Instructions: You must show your work including formula used, data tables (when necessary) charts, drawings, and calculations, not just the answers only. Without showing work but answers only will reduce value to 20% of its full value. If there is a problem to insert Math Editor in MS Word answer document, you can write on white paper, scan and insert as pictures.

1. A local doctor's office tracks the number of insurance claim rejections on a monthly basis. From the following information, create a chart for individuals with a moving-range chart. Interpret the chart.

Month	# of rejected claims
Nov.	42
Dec.	31
Jan.	58
Feb.	46
Mar.	58
Apr.	48
May	42
June	65
July	78
Aug	74
Sept.	58
Oct.	59
Nov.	45
Dec.	46

2. Eighteen successive heats of steel alloy are tested for Rockwell hardness. The resulting data are shown below. Setup control limits for the moving average and moving range charts for a sample size of n=4.

Heat	Hardness	Heat	Hardness
1	0.806	10	0.809
2	0.814	11	0.808
3	0.810	12	0.810
4	0.820	13	0.812
5	0.819	14	0.810
6	0.815	15	0.809
7	0.817	16	0.807
8	0.810	17	0.807
9	0.811	18	0.800

Reference no: EM131261380

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