www.gusucode.com > stats 源码程序 matlab案例代码 > stats/ComputeNoncentralFDistributionPdfExample.m
%% Compute Noncentral _F_ Distribution pdf % % Copyright 2015 The MathWorks, Inc. %% % Compute the pdf of a noncentral _F_ distribution with degrees of freedom % |NU1 = 5| and |NU2 = 20|, and noncentrality parameter |DELTA = 10|. For % comparison, also compute the pdf of an _F_ distribution with the same % degrees of freedom. x = (0.01:0.1:10.01)'; p1 = ncfpdf(x,5,20,10); p = fpdf(x,5,20); %% % Plot the pdf of the noncentral _F_ distribution and the pdf of the _F_ % distribution on the same figure. figure; plot(x,p1,'b-','LineWidth',2) hold on plot(x,p,'g--','LineWidth',2) legend('Noncentral F','F distribution')