|
for example, cheering about a rise in median family income from $24,000 to $38,000 from 1950 to 1965. First, hopefully they are taking inflation into account. Second, there is no reason for a growing median to mean universal prosperity.
Here's household income from 2005 - distribution A 8.6% under $10,000 13.02% under $20,000 (and greater than $10,000) 12.59% under $30,000 11.15% under $40,000 4.64% under the median of $44,389 4.57% under $50,000 8.18% under $60,000 7.11% under $70,000 5.68% under $80,000 8.23% under $100,000 14.23% over $100,000 1.7% over $250,000
then suppose the median grows to $50,000. There is nothing to say that the future distribution might not look like this
Distribution B 21.62% under $10,000 23.74% under $20,000 4% under $30,000 .5% under $40,000 .14% under the median of $50,000 12.75% under $60,000 12.79% under $70,000 13.91% under $80,000 10% under $100,000 5.23% over $100,000 .7% over $250,000
There simply is no way that you can determine that something like that did not happen just by comparing two medians. Further, a median can go through the roof and that does not really mean anything to the people who are stuck below $20,000 for household income. A rising median simply does not mean that all boats are being lifted. Nor does a stagnant median mean that nothing is improving. From the same Distribution A you could goto a stagnant median with a distribution like this
Distribution C .6% under $10,000 11.02% under $20,000 (and greater than $10,000) 20.59% under $30,000 13.15% under $40,000 4.64% under the median of $44,389 12.57% under $50,000 7.18% under $60,000 5.11% under $70,000 8.68% under $80,000 10.23% under $100,000 5.23% over $100,000 .7% over $250,000
Some downward mobility for the upper middle class there, but distribution C is much more equal than what is current. I could just have easily bumped the people over the median up by $10,000 while leaving the median the same.
|