Tag Archives: econometrics

Hebbian History

memeengine replied to your post: Or can the influence of any ancestor ever fade down to zero? (Or, well… to arbitrarily small size?) An AR[1] process can go arbitrarily ↓0 as time↑∞. But in real life the sins of the fathers … Continue reading

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“You can keep blaming your parents for your life in your 20’s, but by the time you’re 30 it’s your own fault.” —having a difficult time getting an original source on this quote This is like unknotting an autoregressive term … Continue reading

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http://video.ted.com/assets/player/swf/EmbedPlayer.swf Noticed: It’s easier for me to grok statistical significance (p’s and t’s) from a scatterplot than magnitude (β’s). Even though magnitude can be the most important thing, it’s “hidden” off to the left. Note to self: look off to the left … Continue reading

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It takes ~20 observations to verify your first significant digit of the mean with confidence. Do you know how many observations it takes to verify your first sig-fig of the variance? More like 1000. And that’s just to get one … Continue reading

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I feel vindicated in several ways by the Netflix Engineering team’s recent blog post explaining what they did with the results of the Netflix Prize. What they wrote confirms what I’ve been saying about recommendations as well as my experience … Continue reading

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A First Lesson in Econometrics by John J. Siegfried

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As nice as it is to be able to assume normality, … there are problems. The most obvious problem is that we could be wrong. One … very nice thing … is that, in many situations, … [being wrong] won’t … Continue reading

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