"The table below is data on telephone usage time by operators to serve customer requests that will be used to explain the use of Xbar and R-chart". Question: a. Create UCL and LCL with Limit Control Factor A2 b. Create UCL and LCL with Limit Control Factor D3 and D4

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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"The table below is data on telephone usage time by operators to serve customer requests that will be used to explain the use of Xbar and R-chart".

 

Question: 
a.    Create UCL and LCL with Limit Control Factor A2
b.    Create UCL and LCL with Limit Control Factor D3 and D4

Day-1 1st minutes
4
3
1
2
3
4
56
6
7
8
9
10
5
1
8
12
2
3
4
2nd minute 3rd minute 4th minute
2
4
7
6
3
4
2
3
12
2
5
5
4
6
8
6
10
11
13
4
12
4
3
6
6
2
1
5
6
6
5th minute
1
4
7
8
4
11
9
3
4
6
average
X
3,20
5,00
4,40
6,60
4,00
8,00
7,80
5,40
5,60
4,20
5,42
R
4
4
4
10
7
9
10
9
11
5
7,3
Transcribed Image Text:Day-1 1st minutes 4 3 1 2 3 4 56 6 7 8 9 10 5 1 8 12 2 3 4 2nd minute 3rd minute 4th minute 2 4 7 6 3 4 2 3 12 2 5 5 4 6 8 6 10 11 13 4 12 4 3 6 6 2 1 5 6 6 5th minute 1 4 7 8 4 11 9 3 4 6 average X 3,20 5,00 4,40 6,60 4,00 8,00 7,80 5,40 5,60 4,20 5,42 R 4 4 4 10 7 9 10 9 11 5 7,3
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question : from where we got "0,577" ?

size 5=0.577

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