Workshop Statistics
Lab 3

1: Introduction 2: Files Needed 3: Data Collection 4: Descriptive Stats 6: Discussion 7: Thought Questions 8: Statistical Inference 9: Simulation 10: Summary 11: Application 12: Conclusions

Summary

(d) Summarize what you have learned from this simulation. In particular,

• Make sure you clearly explain what this simulation represents.
• What are the observational units and variable of this new dotplot?
• Describe the shape, center, and spread (with appropriate numerical support) of this new distribution (assuming the null hypothesis to be true).
• Explain why this distribution should be centered around zero.
• Where does the difference in group means that we observed in our study (JFK group – JFKC group) fall in this graph (near the middle or in a tail)? Is it a surprising outcome when there is no underlying treatment effect?? Enough for you to reject the null hypothesis? How are you deciding?
• Interpret the p-value in your own words (Don't simply decide whether it's small, but explain what it measures: The proportion of whats that do what assuming what?).