A candy bar manufacturer desires to set up a variables

Reference no: EM1317482

To draw the 3-sigma X-bar chart and R-chart parameters.

A candy bar manufacturer desires to set up a variables control chart for the net weight of its candy bars. It is not exactly clear what charts should be used. A total of 60 candy bar weights (in grams) were obtained and are displayed in the following table.

Sample Number	Candy Bar 1	Candy Bar 2	Sample Number	Candy Bar 1	Candy Bar 2
1	62.671	61.740	16	61.228	62.239
2	62.246	62.381	17	62.305	61.37
3	61.545	59.456	18	61.286	61.483
4	62.233	61.409	19	61.557	61.477
5	59.108	61.664	20	62.147	61.476
6	61.415	60.276	21	62.333	61.675
7	61.872	61.979	22	60.608	63.635
8	62.197	61.308	23	60.907	60.126
9	60.603	61.228	24	60.89	60.231
10	62.007	61.305	25	63.044	60.430
11	61.171	59.542	26	60.677	61.664
12	62.323	61.751	27	61.284	62.112
13	60.707	61.921	28	60.343	61.068
14	62.467	60.445	29	61.42	61.122
15	59.711	60.881	30	62.146	60.837

a. Set up the 3-sigma X-bar chart and R chart parameters, centerline, and the control limits (n=2).

Reference no: EM1317482

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