# probability distribution function (normal distribution)

Version 1.2.0.0 (1.63 KB) by
This function calculates the probability under the normal distribution curve
Updated 19 Jun 2009

This function calculates the probability under the normal distribution curve, plots the graph and the area calculated.

%Normaldistribution
%
% calculating the area under a normal distribution curve
% from -ve infinity upto point x.
%
% Input:
% x : point on the normal distribution curve
% mean : mean of the normal distribution curve
% sigma : standard deviation of the normal distribution curve
% (hint: normal dist mean=0, sigma=1)
% plotting: Plot the calculated area if plotting = 1
% Output: area under the curve.
%
% Example:
% x=[-20:20] % your data points
% sigma=length(x)/2/3.5 % PDF width is 3.5 sigma
% mean=0 % mean between -20 and 20
% normaldistribution(0, mean, sigma,1) % Calculate area from -inf to 0
%
%
% Author:
% Sherif Omran
% University and university hospital of Zurich
% Date: May 2009
% Part of my phd thesis:
% email: sherif.omran@gmx.de
%-------------------------------------------------------------------------%

### Cite As

Sherif Omran (2024). probability distribution function (normal distribution) (https://www.mathworks.com/matlabcentral/fileexchange/23978-probability-distribution-function-normal-distribution), MATLAB Central File Exchange. Retrieved .

##### MATLAB Release Compatibility
Created with R2008a
Compatible with any release
##### Platform Compatibility
Windows macOS Linux
##### Categories
Find more on Probability Distributions in Help Center and MATLAB Answers

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!
Version Published Release Notes
1.2.0.0

Added an example on how to use it

1.1.0.0

corrected the title: from prbability into probability

1.0.0.0