www.gusucode.com > stats 源码程序 matlab案例代码 > stats/ComputeAndPlotNoncentralFDistributionPdfExample.m
%% Compute and Plot Noncentral _F_ Distribution pdf % % Copyright 2015 The MathWorks, Inc. %% % Compute the pdf of a noncentral _F_ distribution with parameters |NU1 = % 5|, |NU2 = 20|, and |DELTA = 10|. For comparison, also compute the pdf of % an _F_ distribution with parameters |NU1 = 5| and |NU2 = 20|. x = (0.01:0.1:10.01)'; p1 = ncfpdf(x,5,20,10); p = fpdf(x,5,20); %% % Plot the noncentral _F_ and _F_ distribution pdfs on the same figure. The % peak of the noncentral _F_ distribution pdf (solid line) is further to the % right than the peak of the _F_ distribution pdf (dotted line). figure; plot(x,p,':',x,p1,'-')