Les Andrews

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When the chances of having any one of the five prerequisites are two out of three, as in this example, the chance of having all five simultaneously is two-thirds multiplied by itself five times. That comes out to be 32/243 in this example,1 or about one out of eight. In other words, the chances of failure are about seven out of eight. All those people with fewer than five prerequisites have the same outcome—failure. Only those with all five of those prerequisites succeed. This creates a very skewed distribution of success, and nothing like a normal bell curve of distribution of outcomes that ...more
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Discrimination and Dis...
 
by
Thomas Sowell
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