Answered: Determine the trial central line and…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

Determine the trial central line and control limits for a moving-average and moving-range chart using a time period of 3. Data in liters are as follows: 4.56, 4.65, 4.66, 4.34, 4.65, 4.40, 4.50, 4.55, 4.69, 4.29, 4.58, 4.71, 4.61, 4.66, 4.46, 4.70, 4.65, 4.61, 4.54, 4.55, 4.54, 4.54, 4.47, 4.64, 4.72, 4.47, 4.66, 4.51, 4.43, and 4.34. Are there any out-of-control points?

Data in liters is tabulated as follows.
SUBGROUP NUMBER
VALUE
1
4.56
2
4.65
3
4.66
4
4.34
4.65
4.4
7
4.5
8
4.55
9
4.69
10
4.29
11
4.58
12
4.71
13
4.61
14
4.66
15
4.46
16
4.7
17
4.65
18
4.61
19
20
4.54
4.55
21
4.54
4.54
4.47
22
23
24
4.64
25
26
4.72
4.47
27
4.66
28
4.51
29
4.43
30
4.34

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