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Half of all low-income students have below average test scores! We need new laws, new taxes, and new government initiatives to fix this problem!


Be careful about distributions; not everything's a bell curve.

Consider: 99% of Americans own a below-average number of houseboats.


There are 3 different measures of "average", just choose average = median and you're set.


So we could spend all the money and happily report that as a result of huge investments in education half of all low-income students now have above average test scores - a great improvement indeed!


Hmm. Half of all students in middle- to high-income families now have below-average test scores.

Clearly there must be no correlation between income and intelligence!




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