The thickness of a printed circuit board is an impor- tant quality parameter. Data on board thickness (in inches) are given in Table 6E.5 for 25 samples of three boards each. (a) Set up ī and R control charts. Is the process in statistical control? (b) Estimate the process standard deviation. (c) What are the limits that you would expect to con- tain nearly all the process measurements? (d) If the specifications are at 0.0630 in. ±0.0015 in., what is the value of the PCR C,?
The thickness of a printed circuit board is an impor- tant quality parameter. Data on board thickness (in inches) are given in Table 6E.5 for 25 samples of three boards each. (a) Set up ī and R control charts. Is the process in statistical control? (b) Estimate the process standard deviation. (c) What are the limits that you would expect to con- tain nearly all the process measurements? (d) If the specifications are at 0.0630 in. ±0.0015 in., what is the value of the PCR C,?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question

Transcribed Image Text:- TABLE 6E.5
Printed Circuit Board Thickness for
Exercise 6.10
Sample
Number
X2
X3
0.0629
0.0636
0.0640
0.0630
0.0631
0.0622
3
0.0628
0.0631
0.0633
4
0.0634
0.0630
0.0631
5
0.0619
0.0628
0.0630
6
0.0613
0.0629
0.0634
7
0.0630
0.0639
0.0625
8
0.0628
0.0627
0.0622
0.0623
0.0626
0.0633
10
0.0631
0.0631
0.0633
11
0.0635
0.0630
0.0638
12
0.0623
0.0630
0.0630
13
0.0635
0.0631
0.0630
14
0.0645
0.0640
0.0631
15
0.0619
0.0644
0.0632
16
0.0631
0.0627
0.0630
17
0.0616
0.0623
0.0631
18
0.0630
0.0630
0.0626
19
0.0636
0.0631
0.0629
20
0.0640
0.0635
0.0629
21
0.0628
0.0625 0.0616
22
0.0615
0.0625
0.0619
23
0.0630
0.0632
0.0630
24
0.0635
0.0629
0.0635
25
0.0623
0.0629
0.0630

Transcribed Image Text:6.10. The thickness of a printed circuit board is an impor-
tant quality parameter. Data on board thickness (in
inches) are given in Table 6E.5 for 25 samples of
three boards each.
(a) Set up ī and R control charts. Is the process in
statistical control?
(b) Estimate the process standard deviation.
(c) What are the limits that you would expect to con-
tain nearly all the process measurements?
(d) If the specifications are at 0.0630 in. ±0.0015 in.,
what is the value of the PCR C,?
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