Posts Tagged ‘ constant ’

R for dummies

October 19, 2012
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R for dummies

Just saw this nice review of R for dummies. And thought after this afternoon class that my students in the simulation course at Paris-Dauphine could clearly benefit from reading it! They in fact had a terrible time simulating a truncated normal distribution by accept-reject. As they could not get the notion of normalising constants… (Yes,

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On linear models with no constant and R2

February 2, 2012
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On linear models with no constant and R2

In econometrics course we always say to our students that "if you fit a linear model with no constant, then you might have trouble. For instance, you might have a negative R-squared". So I tried to find databases on the internet such that, when we ...

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