When plotting a normal distribution using the pdf command, setting the x-value range to negative values seems to give me a wrong answer. Quite likely this is me misunderstanding the command but any help would be appreciated.
I obtain the parameters using the code:
fit_parameters = fitdist(double(data_to_fit(:)),'Normal');
I then try plot it as follows:
Considering that the mean is just below 0, I've set my x-values to something like -80:80. What I get, however, is a curve centred at 80 which is obviously wrong.
I am using MatLab 2013