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Concise explanation of statistical errors
Given a response variable (y) and two control variables (x1, x2). Assume the following model: y = a1*x1 + a2*x2 + a3*(x1*x2) Suppose your statistical test show that a1, a2, and a3 all significantly different than zero. The next appropriate step is to test for differences between x1 at a constant value of x2. That way one can determine if a ...
Posted to The Undercover Economist by Adam on November 23, 2007
Discrimination, Grocery stores and Nubile Baggirls
I'm outraged. After an exhaustive statistical study, I've uncovered a corporate prejudice which suggests systemic sexual discrimination the likes of which could be nationwide!!!!! As a frequent customer to a regional grocery store deemed superior to the Walmarts and Safeways in service (which naturally translates into higher prices), I have ...
Posted to The Undercover Economist by Usama2 on November 22, 2007