Question

Twelve samples, each containing five parts, were taken

from a process that produces steel rods. The length of each rod in the

samples was determined. The results were tabulated and sample

means and ranges were computed. The results were:

Sample Sample Mean (in.) Range (in.)

1 10.002 0.011

2 10.002 0.014

3 9.991 0.007

4 10.006 0.022

5 9.997 0.013

6 9.999 0.012

7 10.001 0.008

8 10.005 0.013

9 9.995 0.004

10 10.001 0.011

11 10.001 0.014

12 10.006 0.009

a) Determine the upper and lower control limits and the overall

means for -charts and R-charts.

the answer states an equation using numbers i know how to get except .577

how did you get the .577

Answer #1

1. Twelve samples, each
containing five parts, were taken from a process that produces
steel rods. The length of each rod is the sample was determined.
The results were tabulated and sample means and ranges were
computed.
Sample Sample Mean (in.) Range (in.)
Sample
Sample Mean (inches)
Sample Range (inches)
1
10.001
0.011
2
10.003
0.014
3
9.995
0.007
4
10.007
0.022
5
9.997
0.013
6
9.999
0.012
7
10.001
0.008
8
10.006
0.014
9
9.994
0.005
10
10.002
0.010...

Twelve samples, each containing five parts, were taken from a
process that produces steel rods at Emmanual Kodzi's factory. The
length of each rod in the samples was determined. The results were
tabulated and sample means and ranges were computed.
Refer to Table S6.1 - Factors for computing control chart limits
(3 sigma) for this problem.
Sample
Size, n
Mean Factor,
A2
Upper Range,
D4
Lower Range,
D3
2
1.880
3.268
0
3
1.023
2.574
0
4
0.729
2.282
0...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 2 minutes ago

asked 29 minutes ago

asked 33 minutes ago

asked 49 minutes ago

asked 52 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago