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Not as bad as I expected : I passed ! Thank you very much, David, for your study notes (very helpful, especially in the last few weeks before the exam !), your screencasts (so entertaining and so instructive), and your spreadsheets. Congratulations for all BT members who passed. Good luck...

Oops, I meant : 'The inequality 3.20 should be : P(abs(X-mu_x) <= c.sigma_x) >= 1-1/c^2 instead of : P(abs(X-mu_x) <= c.sigma_x) <= 1-1/c^2 '

The inequality 3.20 should be : P(abs(X-mu_x) <= c.sigma_x) >= 1-1/c^2 instead of : P(abs(X-mu_x) >= c.sigma_x) >= 1-1/c^2

Hi all, In my edition of Gujarati's Essentials of econometrics, the sense of Chebyshev inequality (eq. 3.20, page 57, and example 3.21) is wrong. No big deal but I've already scratched my head in the past for such small details... The official site of the book does not provide any...