4Â¥: Originally posted by acalephs at 2015-01-19 09:58:42
²»ºÃÒâ˼£¬ÉÏÒ»¸ö³ÌÐò²»Ó¦¸Ã´øƽ·½¡£¡£¡£
clear all
clc
x=1e7;
chou=1e5;
R_o = normrnd(200,0.5,);           %Éú³É1e7¸öËæ»úÊý£¬Âú×㣨200£¬.5µÄÕý̬·Ö²¼£©
L_o = normrnd(400.921,0.056,);  %Éú³É1e7¸öËæ ...

clear all
clc
x=1e7;
chou=1e5;
R_o = normrnd(200,0.5^2,[1 1e7]);
L_o = normrnd(400.921,0.056^2,[1 1e7]);
%%
k_R = unidrnd(x,[1,chou]);
k_L = unidrnd(x,[1,chou]);
R_k = R_o(k_R);
L_k = L_o(k_L);
R_mean = mean(R_k);
L_mean = mean(L_k);

y_mean=L_mean-R_mean
y=L_k-R_k;
plot([1:chou],y)

2Â¥: Originally posted by acalephs at 2015-01-16 22:47:23
ÊÇÕâ¸öÒâ˼Âð£¿
y_meanÊÇ×ö²î½á¹û£¬4.009209989639458e+02
clear all
clc
x=1e7;
chou=1e5;
R_o = normrnd(200,0.5^2,);
L_o = normrnd(400.921,0.056^2,);
%%
k_R = unidrnd(x,);
k_L = unidrnd(x,);
R ...

3Â¥: Originally posted by ÌÎÌÎÇü at 2015-01-18 18:40:02
ллÁË£¬ÎÒÏÈ¿´¿´£¬²»¶®µÃÔÙÇë½ÌÄã¡£×£ÄãÊÂÊÂ˳ÐÄ£¡...

clear all
clc
x=1e7;
chou=1e5;
R_o = normrnd(200,0.5,[1 1e7]);           %Éú³É1e7¸öËæ»úÊý£¬Âú×㣨200£¬.5µÄÕý̬·Ö²¼£©
L_o = normrnd(400.921,0.056,[1 1e7]);  %Éú³É1e7¸öËæ»úÊý£¬Âú×㣨400.921,0.056^2£©µÄÕý̬·Ö²¼
%%
k_R = unidrnd(x,[1,chou]);                     %Óï¾äµÄ×ÖÃæÒâ˼£º´Ó1µ½1e7Öа´¾ùÔÈ·Ö²¼²úÉú1ÐÐ*1e5ÁеÄËæ»úÕûÊý£»Óï¾äµÄÄ¿µÄ£º´Ó1e7¸öËæ»úÊý³éÈ¡1e5¸öRµÄindex£¬»òÕßÀí½âΪÊý×éϱê
k_L = unidrnd(x,[1,chou]);                     %´Ó1e7¸öËæ»úÊý³éÈ¡1e5¸öLµÄindex£¬»òÕßÀí½âΪÊý×éϱê
R_k = R_o(k_R);                                   %´ÓR_o°´k_Rϱê³é1e5¸öÊý
L_k = L_o(k_L);                                   %´ÓR_o°´k_Lϱê³é1e5¸öÊý
R_mean = mean(R_k);
L_mean = mean(L_k);

y_mean=L_mean-R_mean
y=L_k-R_k;
plot([1:chou],y)