Tag Archives: John Wilder Tukey

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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