PR2303 ENGINEERING STATISTICS AND QUALITY CONTROL
UNIT I SAMPLING THEORY AND TESTING OF HYPOTHESIS
Population, sample – influence of sample size – Estimation of population parameter from
sample – mean and variance, difference of means, variances and ratios of variances –
Tests of hypothesis – large and small samples – Chi-square distribution – F distribution.
UNIT II STATISTICAL PROCESS CONTROL
Variation in process – Factors – control charts – variables X R and , X , - Attributes P,
C and U-Chart Establishing and interpreting control charts process capability – Quality
rating – Short run SPC.
UNIT III ACCEPTANCE SAMPLING
Lot by lot sampling types – probability of acceptance in single, double, multiple sampling
plans – OC curves – Producer’s risk and consumer’s risk. AQL, LTPD, AOQL, Concepts
Design of single sampling plan – standard sampling plans for AQL end LTPD – use of
standard sampling plans – Sequential sampling plan.
UNIT IV RELIABILITY AND QUALITY
Life testing – failure characteristics – meantime to failure – maintainability and availability
– reliability – system reliability – OC curves – reliability improvement techniques –
Reliability testing techniques - Pareto analysis.
UNIT V EXPERIMENTAL DESIGN AND TAGUCHI METHOD
Fundamentals – factorial experiments – random design, Latin square design – Taguchi
method – Loss function – experiments – S/N ratio and performance measure –
Orthogonal array.
TEXT BOOK
1. Amcta Mitra “Fundamentals of Quality Control and improvement” Pearson Education,2002.
REFERENCES
1. Bester field D.H., “Quality Control” Prentice Hall, 7th edition 2003
2. Manohar Mahajan, “Statistical Quality Control”, Dhanpal Rai & Sons, 2001.
3. Sharma S.C., “Inspection Quality Control and Reliability”, Khanna Publications, 2004.
UNIT I SAMPLING THEORY AND TESTING OF HYPOTHESIS
Population, sample – influence of sample size – Estimation of population parameter from
sample – mean and variance, difference of means, variances and ratios of variances –
Tests of hypothesis – large and small samples – Chi-square distribution – F distribution.
UNIT II STATISTICAL PROCESS CONTROL
Variation in process – Factors – control charts – variables X R and , X , - Attributes P,
C and U-Chart Establishing and interpreting control charts process capability – Quality
rating – Short run SPC.
UNIT III ACCEPTANCE SAMPLING
Lot by lot sampling types – probability of acceptance in single, double, multiple sampling
plans – OC curves – Producer’s risk and consumer’s risk. AQL, LTPD, AOQL, Concepts
Design of single sampling plan – standard sampling plans for AQL end LTPD – use of
standard sampling plans – Sequential sampling plan.
UNIT IV RELIABILITY AND QUALITY
Life testing – failure characteristics – meantime to failure – maintainability and availability
– reliability – system reliability – OC curves – reliability improvement techniques –
Reliability testing techniques - Pareto analysis.
UNIT V EXPERIMENTAL DESIGN AND TAGUCHI METHOD
Fundamentals – factorial experiments – random design, Latin square design – Taguchi
method – Loss function – experiments – S/N ratio and performance measure –
Orthogonal array.
TEXT BOOK
1. Amcta Mitra “Fundamentals of Quality Control and improvement” Pearson Education,2002.
REFERENCES
1. Bester field D.H., “Quality Control” Prentice Hall, 7th edition 2003
2. Manohar Mahajan, “Statistical Quality Control”, Dhanpal Rai & Sons, 2001.
3. Sharma S.C., “Inspection Quality Control and Reliability”, Khanna Publications, 2004.
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