Comments on: Freakonomics http://unimodular.net/blog/?p=65 ecstatic over numbers Thu, 14 Feb 2013 21:29:51 +0800 hourly 1 http://wordpress.org/?v=3.1.4 By: tpc http://unimodular.net/blog/?p=65&cpage=1#comment-2232 tpc Wed, 19 Apr 2006 05:43:33 +0000 http://unimodular.net/blog/?p=65#comment-2232 Hi, Thanks for visiting. I'm glad that the problem at least is interesting enough to make another person do some calculations. I did not even consider sampling in my own calculations. I guess it should be an exciting year to be in Madrid, with the ICM. Hope you have a great time! Hi,

Thanks for visiting. I’m glad that the problem at least is interesting enough to make another person do some calculations. I did not even consider sampling in my own calculations.

I guess it should be an exciting year to be in Madrid, with the ICM. Hope you have a great time!

]]> By: Vivero http://unimodular.net/blog/?p=65&cpage=1#comment-2228 Vivero Mon, 17 Apr 2006 01:31:11 +0000 http://unimodular.net/blog/?p=65#comment-2228 I think it's compatible. I don't know if it's possible in practice, for I'm writing from Spain, and have no idea of the ethnic composition of schools there. But if you mix a) 617 schools with 3% of its children black, b) 310 with 12% of its children black and c) 73 with 100% black, and the size of all schools is similar (let's say, 100 children per school)... you will get aprox. 35% of the 20-sized-samples without black children (it's a Bernouilli experiment, with 0 successes; you will probably get full-white samples either from a and b type schools). It's easy to check that the average white child has 6% black companions, and the average black child has 60% black companions Thank you for the amusement, you have been very helpful for a man that can't sleep. and greetings from Madrid! I think it’s compatible. I don’t know if it’s possible in practice, for I’m writing from Spain, and have no idea of the ethnic composition of schools there. But if you mix a) 617 schools with 3% of its children black, b) 310 with 12% of its children black and c) 73 with 100% black, and the size of all schools is similar (let’s say, 100 children per school)… you will get aprox. 35% of the 20-sized-samples without black children (it’s a Bernouilli experiment, with 0 successes; you will probably get full-white samples either from a and b type schools). It’s easy to check that the average white child has 6% black companions, and the average black child has 60% black companions

Thank you for the amusement, you have been very helpful for a man that can’t sleep.
and greetings from Madrid!

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