SOLUTION MANUAL
,A First Course in Quality Engineering Integrating Statistical and Management
Methods of Quality SECOND EDITION Solutions Manual
Chapter 1 Solution
Answers to multiple choice questions:
1.1 (d) 1.2 (c) 1.3 (a) 1.4 (c) 1.5 (b) 1.6 (d)
1.7 (b) 1.8 (c) 1.9 (b) 1.10 (a) 1.11 (b) 1.12 (d)
1.13 (b) 1.14 (d) 1.15 (e) 1.16 (d)
, Chapter 2 Solutions – Part 1
Exercise in Empirical Methods
2-1. Game Times in Baseball games
Histogram and Cumulative frequency distribution of playtime in Am. League
Histogram and Cumulative frequency distribution of playtime in Ntl. League
The chance the game will end before 180 minutes in Am Lg.: 80%, in Ntl Lg.: 85%
The time before which 95% of the games will end - in Am Lg.: 200 minutes, in Ntl Lg.: 200 min. These
results have been read out of the cum. freq. Distribution graph as approximate answers.
The exact numbers can be obtained by tallying the observations in a frequency distribution table.
2-2. Whiteness of PVC Resin:
By comparing the averages (see the descriptive statistics) and observing the box plot (see below) of the
data obtained before and after the project, it seems that the whiteness has improved because of the
improvement project.
DESCRIPTIVE STATISTICS:
, Before Improvement
Variable N Mean Median TrMean StDev SE Mean
Before 72 53.847 53.000 53.203 5.383 0.634
Variable Minimum Maximum Q1 Q3
Before 47.000 74.000 51.000 54.750
After Improvement
Variable N Mean Median TrMean StDev SE Mean
After 72 65.917 67.000 66.375 4.158 0.490
Variable Minimum Maximum Q1 Q3
After 51.000 71.000 65.000 69.000
2-3. Weight of Candybars
Histogram of the candy bar weights:
Histogram of wt of candy bars
60
LSL USL
50
40
Frequency
30
20
10
0
1875 1880 1885 1890 1895 1900
wt of candy bars
Most of the weights are outside the spec- on the higher side.
,A First Course in Quality Engineering Integrating Statistical and Management
Methods of Quality SECOND EDITION Solutions Manual
Chapter 1 Solution
Answers to multiple choice questions:
1.1 (d) 1.2 (c) 1.3 (a) 1.4 (c) 1.5 (b) 1.6 (d)
1.7 (b) 1.8 (c) 1.9 (b) 1.10 (a) 1.11 (b) 1.12 (d)
1.13 (b) 1.14 (d) 1.15 (e) 1.16 (d)
, Chapter 2 Solutions – Part 1
Exercise in Empirical Methods
2-1. Game Times in Baseball games
Histogram and Cumulative frequency distribution of playtime in Am. League
Histogram and Cumulative frequency distribution of playtime in Ntl. League
The chance the game will end before 180 minutes in Am Lg.: 80%, in Ntl Lg.: 85%
The time before which 95% of the games will end - in Am Lg.: 200 minutes, in Ntl Lg.: 200 min. These
results have been read out of the cum. freq. Distribution graph as approximate answers.
The exact numbers can be obtained by tallying the observations in a frequency distribution table.
2-2. Whiteness of PVC Resin:
By comparing the averages (see the descriptive statistics) and observing the box plot (see below) of the
data obtained before and after the project, it seems that the whiteness has improved because of the
improvement project.
DESCRIPTIVE STATISTICS:
, Before Improvement
Variable N Mean Median TrMean StDev SE Mean
Before 72 53.847 53.000 53.203 5.383 0.634
Variable Minimum Maximum Q1 Q3
Before 47.000 74.000 51.000 54.750
After Improvement
Variable N Mean Median TrMean StDev SE Mean
After 72 65.917 67.000 66.375 4.158 0.490
Variable Minimum Maximum Q1 Q3
After 51.000 71.000 65.000 69.000
2-3. Weight of Candybars
Histogram of the candy bar weights:
Histogram of wt of candy bars
60
LSL USL
50
40
Frequency
30
20
10
0
1875 1880 1885 1890 1895 1900
wt of candy bars
Most of the weights are outside the spec- on the higher side.
