I need to find 10000 ramdom # in the range of (0.078,0.0078) for mass and (2, 0.1) for diameter. Then calculate the density of the 10k and do a histogram of them. Can anybody help me please?. This is what I got so far but is not working.
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Azzi Abdelmalek on 29 Aug 2016
You mean in the range of [0.0078 0.078] not [0.078, 0.0078], because 0.0078 is less then 0.078.
a1 = 0.078;
b1 = 0.0078;
m = a1.*rand(10000,1)+b1
Image Analyst on 30 Aug 2016
clc; % Clear the command window.
close all; % Close all figures (except those of imtool.)
clear; % Erase all existing variables. Or clearvars if you want.
workspace; % Make sure the workspace panel is showing.
format long g;
fontSize = 20;
% Create samples for the mass with specified mean and standard deviation.
meanMass = 0.078;
sdMass = 0.0078;
mass = sdMass .* randn(10000,1)+ meanMass;
% Create samples for the diameter with specified mean and standard deviation.
meanDiameter = 2;
sdDiameter = 0.1;
diameters = sdDiameter .* randn(10000,1) + meanDiameter;
% Find the volumes
volumes = (4/3) * pi * (diameters/2) .^ 3;
% Find the density
density = mass ./ volumes;
title('Density Distribution', 'FontSize', 15);
xlabel('Density', 'FontSize', 15);
ylabel('Count', 'FontSize', 15);