matlab normpdf not working on double

Question

I'm running matlab 2013b and when I use normpdf(0.1,0.1,0.1) it informs me that "Undefinded function 'normpdf' for intput arguments of type 'double'. Using which normpdf shows that normpdf is installed within my toolbox does anybody know what is wrong?

Answer 1

What does which -all normpdf actually return? Does it actually point to the function from the statistics toolbox? You can also try edit normpdf to see which file gets opened in the editor.

Normally, the first input to normpdf is a vector or matrix of values, the second and third input scalar (although they can also be vectors or matrices). See documentation for more details.