Question

SHOW ALL WORK. DO NOT USE SOFTWARE TO GENERATE ANSWERS.

Calculate the R-chart and X-bar chart limits for the data given below.

Day	A	B	C	D
1	7.2	8.4	7.9	4.9
2	5.6	8.7	3.3	4.2
3	5.5	7.3	3.2	6.0
4	4.4	8.0	5.4	7.4
5	9.7	4.6	4.8	5.8
6	8.3	8.9	9.1	6.2
7	4.7	6.6	5.3	5.8
8	8.8	5.5	8.4	6.9
9	5.7	4.7	4.1	4.6
10	3.7	4.0	3.0	5.2
11	2.6	3.9	5.2	4.8
12	4.6	2.7	6.3	3.4
13	4.9	6.2	7.8	8.7
14	7.1	6.3	8.2	5.5
15	7.1	5.8	6.9	7.0
16	6.7	6.9	7.0	9.4
17	5.5	6.3	3.2	4.9
18	4.9	5.1	3.2	7.6
19	7.2	8.0	4.1	5.9
20	6.1	3.4	7.2	5.9

Answer 1

Day	A	B	C	D	Mean	Range
1	7.2	8.4	7.9	4.9	7.1	3.5
2	5.6	8.7	3.3	4.2	5.45	5.4
3	5.5	7.3	3.2	6	5.5	4.1
4	4.4	8	5.4	7.4	6.3	3.6
5	9.7	4.6	4.8	5.8	6.225	5.1
6	8.3	8.9	9.1	6.2	8.125	2.9
7	4.7	6.6	5.3	5.8	5.6	1.9
8	8.8	5.5	8.4	6.9	7.4	3.3
9	5.7	4.7	4.1	4.6	4.775	1.6
10	3.7	4	3	5.2	3.975	2.2
11	2.6	3.9	5.2	4.8	4.125	2.6
12	4.6	2.7	6.3	3.4	4.25	3.6
13	4.9	6.2	7.8	8.7	6.9	3.8
14	7.1	6.3	8.2	5.5	6.775	2.7
15	7.1	5.8	6.9	7	6.7	1.3
16	6.7	6.9	7	9.4	7.5	2.7
17	5.5	6.3	3.2	4.9	4.975	3.1
18	4.9	5.1	3.2	7.6	5.2	4.4
19	7.2	8	4.1	5.9	6.3	3.9
20	6.1	3.4	7.2	5.9	5.65	3.8
Average=					5.94125	3.275