Session 2: The Language of Hypothesis Testing; Interactions
(slides, including a few repeated from Session 1)
The "Coin-Tossing" story
on hypothesis testing
Practice exercises on hypothesis testing
Life and death
A challenging and important question
"What's the difference between what I learn from the significance levels, and from the beta-weights?"
A quick look at estimation and presidential polls
A Primer on Polls
(optional fun reading)
Presidential election polls
(with simple executive summary; the rest is optional)
Summary: Hypothesis testing
Summary: Regression analysis
Regression modeling: Structural variations (1)
on interactions (using motorpool dataset as example)
Group Assignment (evening, after Session 2)
Work through the "Caligula's Castle" dataset. At the least, load the dataset, create the product variables, and discuss the interpretation of the regression results.
Practice (for the intervening month)
"Caligula's Castle" dataset and description
Optional background readings on Harrah's Entertainment Inc.
"Hans and Franz" dataset and description
Evanston Wadgets - Delivery times