MATLAB Examples

Compute the Lognormal Distribution pdf

Suppose the income of a family of four in the United States follows a lognormal distribution with mu = log(20,000) and sigma = 1. Compute and plot the income density.

x = (10:1000:125010)';
y = lognpdf(x,log(20000),1.0);

figure;
plot(x,y)
h = gca;
h.XTick = [0 30000 60000 90000 120000];
h.XTickLabel = {'0','$30,000','$60,000',...
                    '$90,000','$120,000'};