Re: [Boost-users] Boost.Random question

Subject: Re: [Boost-users] Boost.Random question
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2010-03-08 14:44:40

AMDG

gast128 wrote:
> a colleague of my asked me to drop a question on the forum about the following 
> case:
>
> He produces 1000 samples with the following code:
>
> boost::normal_distribution<double> n1(1, sqrt(4.0));
> boost::variate_generator< boost::minstd_rand, 
> boost::normal_distribution<double> > g1(boost::minstd_rand(), n1);
>
> He also calulates the covariance. It should be something like (4  0) but he 
> got (4.1 8.3). This 4 is correct, but the 8.3 not. Anyone an idea?
>
>
> Note (again): post from a colleague; i didn't try it myself.
>   

I thought that covariance was a two variable statistic.
What exactly is being tested?

In Christ,
Steven Watanabe