About normcdf() function integration method

[José Luis García Pallero]

Hello:

I'm teaching this semester some maths and I'll explain numerical
integration methods. In one exercise the students must write a script
in order to compute areas below the normal distribution curve and then
use the normcdf() function to check the results and the theoretical
error level for the Simpson and the trapezoidal methods.

My question is, which method for numerical integration uses Octave in
normcdf()? If uses the trapezoidal or Simpson method, what is the
level of discretization?

Thanks

-- 
*****************************************
José Luis García Pallero
address@hidden
(o<
/ / \
V_/_
Use Debian GNU/Linux and enjoy!
*****************************************