I just added the statistics toolbox to my MATLAB installation. I want to use the norminv function. Today I upgraded from 2011a to 2011b but adding the statistics toolbox.
However, when I call norminv, e.g. norminv(0.5) I get the error message
Undefined function 'stdnormal_inv' for input arguments of type 'double'.
Error in norminv (line 54) inv = m + s .* stdnormal_inv (x);
My guess it is something to do with the path. However, the statistics toolbox is in the path. When I type help norminv I get the help information. When I type which norminv I get
which is a bit strange because norminv.m is not in this directory.
Any help would be greatly appreciated.