Statistical Laboratories - University of Alberta

Two- Sample Problems: Comparing the Durability of Tires

Data and Study Design		1. Problem Formulation 2. Study Design 3. Data 4. Preliminary Data Analysis
Statistical Sleuthing	Descriptive Methods	5. Displaying the Data 6. Describing the Data
Statistical Sleuthing	Inferential Methods	7. Checking Normality 8. The Paired t-Test and a Confidence Interval 9. The Nonparametric Approach
SPSS Instructions		10. Displaying and Describing the Data with SPSS 11. Checking the Normality Assumption 12. Using Parametric Methods to Make Inferences 13. Using Nonparametric Methods to Make Inferences
Summary		14. Final Comments 15. Brief Version of the Case Study