How proxies fail


See on Scoop.itData Nerd’s Corner

A lot of the time perfectly well-meaning data goals end up terribly wrong. Certain kinds of these problems stem from the same issue, namely using proxies. Here’s how it works. People focus on a pro…

Carla Gentry CSPO‘s insight:

People have trouble measuring the object in question directly, so they reasonably ask, how do we measure this problem?

They’re smart, so they come up with something, say some metric (standardized test scores, shareprice, VaR). It’s not perfect, though, and so they discuss in detail all the inadequacies with the metric. Even so, they’d really like to address this issue, so they decide to try it.

See on mathbabe.org

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