In: Statistics and Probability
For the data in Question 3 of Chapter 18, calculate 6sigma^, Cp, and Cpk. Interpret the indices. The specification limits are 50 ± 0.5.
Chapter 18 data:
Subgroup | X Bar | Range |
1 |
50.3 |
.73 |
2 | 49.6 | .75 |
3 | 50.8 | .79 |
4 | 50.9 | .74 |
5 | 49.8 | .72 |
6 | 50.5 | .73 |
7 | 50.2 | .71 |
8 | 49.9 | .70 |
9 | 50.0 | .65 |
10 | 50.1 | .67 |
11 | 50.2 | .65 |
12 | 50.5 | .67 |
13 | 50.4 | .68 |
14 | 50.8 | .70 |
15 | 50.0 | .65 |
16 | 49.9 | .66 |
17 | 50.4 | .67 |
18 | 50.5 | .68 |
19 | 50.7 | .70 |
20 | 50.2 | .65 |
21 | 49.9 | .60 |
22 | 50.1 | .64 |
23 | 49.5 | .60 |
24 | 50.0 | .62 |
25 | 50.3 | .60 |