均匀分布实验.doc

a.图1.11-1的源代码----th_3.m： [th_3.m] %%%---th_3.m---绘制均匀分布的密度函数及累积分布函数图的程序 %%%%%%---------图2.11-1======%%%%%%%%%%%%%%%%%%% %%%-----copyright@tanhao huangwei-----%%%%%%%%% clear,clf x=0:10; %x的范围 y=unifpdf(x,2,8); %求分布密度 z=unifcdf(x,2,8); %累积分布 x1=[x(1:2) 2 x(3:9) 8 x(10:11)]; %取点 y=[y(1:2) 0 y(3:9) 0 y(10:11)]; %对应点概率 subplot(1,2,1);plot(x1,y,r); %分割窗口，画分布密度函数 axis([0,10,-0.01,0.3]); %标明x轴范围 subplot(1,2,2);plot(x,z,k); %分割窗口，画累积分布函数 axis([0,10,-0.1,1.1]); b.图1.11-2及1.11-3的源代码(tongfenbu.m): [tongfenbu.m] %%%%%%%%%%%%%%%%%%%-----2.11-3--同分布模拟--%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%--copright@tanhaohuangwei---%%%%%%%% function tongfenbu() clear,clc, clf %%%%%%%清屏 x1=[0,1];f1=[1,1]; hold on %%%同一图形显示 plot(x1,f1); x11=[-0.5 0]; f11=[0 0]; x2=[1 2]; plot(x11,f11); plot(x2,f11); plot([0 0],[0 1],--); %% 虚线 plot([1 1],[0 1],--); f2=x1;f22=2-x2; %%%%%%%%?f2图形-------- plot(x1,f2,r:*);plot(x2,f22,r:*); %%%%%----画图-------- x31=linspace(0,1,100);%y31=f31(x31);plot(x31,y31,k);%%f3 y41=f41(x31);plot(x31,y41,c);%%f4 y51=f51(x31);plot(x31,y51,g);%%f5 x32=linspace(1,2,100);y32=f32(x32);plot(x32,y32,k); y42=f42(x32);plot(x32,y42,c); y52=f52(x32);plot(x32,y52,g); x33=linspace(2,3,100);y33=f33(x33);plot(x33,y33,k); y43=f43(x33);plot(x33,y43,c); y53=f53(x33);plot(x33,y53,g); x44=linspace(3,4,100);y44=f44(x44);plot(x44,y44,c); y54=f54(x44);plot(x44,y54,g); x55=linspace(4,5,100);y55=f55(x55);plot(x55,y55,g); %%%%%%%%--------?正态分布的情形---------%%%%%%%%%%%%%%%%%%%%%%%%%% x10=linspace(0,10,1000);y10=fe(x10);plot(x10,y10); x11=linspace(0,11,1000);y10=fe(x11);plot(x10,y10); x12=linspace(0,12,1000);y10=fe(x12);plot(x10,y10); x13=linspace(0,13,1000);y10=fe(x13);plot(x10,y10); x14=linspace(0,14,1000);y10=fe(x14);plot(x10,y10); x15=linspace(0,15,1000