试验设计上机题
姓名 李 娟 学号 1007010282
第一题
clear all;close all;
X=[3.48 3.37 3.47 3.38 3.40 3.43]; >> M_mean=mean(X); >> G_mean=geomean(X); >> H_mean=harmmean(X); >> [n,d]=size(X); >> %样本方差的计算； >> S=0; for i=1:d
S=(X(1,i)-M_mean)^2+S; end
S_var=S/(d-1); V_var=var(X); V_std=std(X); S_std=S_var^(1/2); >> %算术平均误差的计算 SD=0; for i=1:d
SD=SD+abs(X(1,i)-M_mean); end Delta=SD/d;
Range=max(X)-min(X); >> %输出结果 M_mean=M_mean G_mean=G_mean H_mean=H_mean S_std=S_std V_std=V_std S_var=S_var V_var=V_var Delta=Delta Range=Range M_mean =3.4217 G_mean =3.4214 H_mean =3.4211 S_std =0.0462 V_std =0.0462 S_var =0.0021 V_var = 0.0021 Delta =0.0383
Range =0.1100
第二题
>> clear all; close all;
>> A=[8.0,8.0,10.0,10.0,6.0,6.0,4.0,6.0,6.0,8.0]; >> B=[7.5,7.5,4.5,4.0,5.5,8.0,7.5,7.5,5.5,8.0]; >> Range_A=max(A)-min(A) ; >> Range_B=max(B)-min(B) ;
>> Var_A=var(A);Var_B=var(B);Std_A=std(A); Std_B=std(B); >> %输出结果 Range_A= Range_A Range_B= Range_B Var_A=Var_A Var_B=Var_B Std_A=Std_A Std_B=Std_B Range_A =6 Range_B =4 Var_A =3.7333 Var_B =2.3028 Std_A =1.9322 Std_B 1.5175
第三题
>> clear all;close all;
>> X=[7 7 15 11 9;12 17 12 18 18;14 18 18 19 19;19 25 22 19 23;7 10 11 15 11]; >> X=X';
>> TOP={'实验次数\\棉花百分比','15%','20%','25%','30%','35%'}; >> left={'5 次','5 次','5 次','5 次','5 次'}; >> [TOP;left',num2cell(X)]
ans = '实验次数\\棉花百分比' '15%' '20%' '25%' '30%' '35%'
'5 次' [ 7] [ 12] [ 14] [ 19] [ 7] '5 次' [ 7] [ 17] [ 18] [ 25] [ 10] '5 次' [ 15] [ 12] [ 18] [ 22] [ 11] '5 次' [ 11] [ 18] [ 19] [ 19] [ 15] '5 次' [ 9] [ 18] [ 19] [ 23] [ 11]
>> Y=[X(:,1);X(:,2);X(:,3);X(:,4);X(:,5)]; >> for i=1:5 lable1(i)={'15%'}; end for i=1:5 lable2(i)={'20%'};
