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Professor’s name
Student’s name
Course title
Date
ETM 319*001 (Fall 2017)
Assignment3
Chapter 5 . Fundamentals of Statistics
Chapter 6 . Control Charts for Variables
Due date: 10/15/2017
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Question One
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Step 1:
Calculate a tally of the results of the relative strength of the 150 silver solder welds.
Cell boundaries
Tabulation
0.1 – 0.5
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0.6 – 1.0
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1.1 – 1.5
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1.6 – 2.0
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2.1 -2.5
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2.6 – 3.0
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3.1 – 3.5
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3.6 – 4.0
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Calculate the histogram results of the relative strength of the 150 silver solder welds.
Cell boundaries
Cell Midpoints
Observed Frequency
0.1 – 0.5
0.3
3
0.6 – 1.0
0.8
15
1.1 – 1.5
1.3
34
1.6 – 2.0
1.8
29
2.1 -2.5
2.3
30
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2.6 – 3.0
2.8
22
3.1 – 3.5
3.3
15
3.6 – 4.0
3.8
2
Total
150
Step 2:
Diagrammatic representation of the results of the relative strength of the 150 silver solders
welds.
Observed Frequency
40
35
30
25
20
15
10
5
0
0.3
0.8
1.3
1.8
2.3
2.8
Step 3:
The Diagrammatic representation of the cumulative frequency histogram of inspection per day
Cell mid point
Frequency
Relative
Cumulative
Relative
frequency
Frequency
cumulative
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Frequency
148
2
0.009708738
2
0.009708738
139
3
0.014563107
5
0.024271845
130
8
0.038834951
13
0.06310679...