Reply to Moving to DC:Oyster/Eaton/Hyde/Stoddert/Murch?

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[quote=Anonymous][quote=Anonymous][quote=Anonymous]The only correct answer here is Mann.[/quote]

Wrong answer.  She wants a racially DIVERSE school...and that is not Mann.  Btw, Mann's aftercare program is mediocre.[/quote]

This is a false statement. Demonstrably so.

A standard measure of concentration is the HHI (Herfindahl-Hirschman Index). You can compute this for the "relevant" elementary schools in NW and you'll see that, surprisingly, Mann is least concentrated.

I'm too busy at work to do the computations today, but it's pretty straightforward. It's just the sum of the squared "market shares."

Mann is: 
Black: 11%
Hispanic/Latino: 14%
White: 61%
Asian: 8%
Pacific/Hawaiian: 0%
Native/Alaskan: 0%
Multiple races: 5%

It's HHI is .11*.11 + .14*.14 + .61*.61 + .08*.08 +.05*.05=.4127

Murch, for example is: 
Black: 12%
Hispanic/Latino: 8%
White: 66%
Asian: 9%
Pacific/Hawaiian: 0%
Native/Alaskan: 0%
Multiple races: 5%

It's HHI is .12*.12+.08*.08+.66*.66+.05*.05=.4589

According to the STANDARD measure of industry concentration (which is very appropriate here), Murch is less diverse than Mann.

Numbers don't lie.

Don't flame me because you don't like the answer, by the way. It surprised me too when I ran the numbers. It just goes to show that our gut (especially when almost nobody on this board has visited both Murch and Mann, let alone a half dozen elementary schools, so we're just basing our expectations off of nothing more than guesses) is often wrong.	
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