probability distribution function (normal distribution)
This function calculates the probability under the normal distribution curve
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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
%-------------------------------------------------------------------------%
引用
Sherif Omran (2026). probability distribution function (normal distribution) (https://jp.mathworks.com/matlabcentral/fileexchange/23978-probability-distribution-function-normal-distribution), MATLAB Central File Exchange. に取得済み.
