Principles and Methods1. Introduction2. Frequency Distribution of a Sample3. Sample Mean and Sample Variance4. Fundamental Conceps of Probability Theory5. Probability Distribution6. Mean Variance and Skewness of a Distribution7. Special Discrete Distributions8. Normal Distribution9. Probability Distributions of Several Random Variables10. Distributions Used in Tests11. Estimation of Parameters12. Confidence Intervals13. Testing of Hypotheses14. Quality Control and Acceptance Sampling15. Tests fo...