8.1. Statistical Concepts8.2. The Light-Bulb Factory Example8.3. Calculating a Mean8.4. Calculating a Mode8.5. Calculating a Median8.6. Calculating Standard Deviation, Variance, and Standard Error8.7. Building Confidence Intervals8.8. Calculating Correlation 8.9. Exploring Patterns with Autocorrelation8.10. Using a Simple Moving Average8.11. Extending Moving Averages