Foreword
Cooperating organizations
Section one. General
1. Scope
2. References
Section two. General principles
3. A practical problem from rubber testing
4. Introduction to statistical methods
5. Application of statistical tests to the example
in clause 3
6. Design and analysis of experiments
7. Analysis of variance
8. Application of regression analysis
9. Reporting of results
10. Ranking methods
Section three. Statistical techniques applicable to
specific tests
11. Introduction
12. Tensile testing
13. Tear strength (crescent)
14. Abrasion resistance
15. Crack growth and fatique testing
16. Resistance to low temperatures
17. Ozone resistance
Appendices
A. Formulae for easy reference
B. References (useful books and tables)
C. Glossary of statistical terms and symbols
D. Statistical reference tables
Tables
1. Factors for estimating standard deviation from a
range of values in a Normal population
2. Criteria for rejecting outlying values by Dixon's
test
3. Factor interaction on compression set
4. Response values for combinations of the three
independent variables
5. Correlation coefficient versus numbers of
observations
6. Friedman's test critical values Kcr for alpha = 0.05
level of significance
7. Ranking of 10 rubber vulcanizates by five observers
8. Plot positions (double exponential frequency
distribution function)
9. Weighting factors w for calculating mode
10. Weighting factors d for calculating standard
deviation
11. The Normal (Gaussian) distribution function
12. Percentage points of Student's t-distribution
13. 5% points of F distribution
Figures
1. Normal distribution curve
2. Confidence limits versus true coefficient of
variation
3. Real difference versus true coefficient of variation
4. Confidence limits versus estimated coefficient of
variation
5. Real difference versus estimated coefficient of
variation
6. Compression set versus post-cure for different
durations of test
7. Dependency of flexing life on age of material
8. Illustration of simple linear regression
9. Histogram of results
10. Double exponential distribution
11. Analysis of tensile strength results
12. Normal (Gaussian) distribution function