The following are quality control data for a manufacturingprocess at Kensprt Chemical Company. The data show the temperaturein degrees centigrade at five points in time during themanufacturing cycle. The company is interested in using qualitycontrol charts in monitoring the temperature of its manufacturingcycle. Construct an X bar and R chart and indicate what its tellsyou about the process.
Sample Xbar R
1 95.72 1.0
2 95.24 .9
3 95.38 .8
4 95.44 .4
5 95.46 .5
6 95.38 1.1
7 95.40 .9
8 95.44 .3
9 95.08 .2
10 95.50 .6
11 95.80 .6
12 95.22 .2
13 95.56 1.3
14 95.22 .5
15 95.74 .8
16 95.72 1.1
17 94.82 .6
18 95.46 .5
19 95.60 .4
20 95.64 .6
