UC知道matlab 语句解释
来源：百度知道 编辑：UC知道 时间：2024/07/04 10:22:12
%Function [varargout]=xxfx1(x,y)
%方差分析表
x=[76.9,82.1,80.1,77.1,82.4,85.1,87.4,85.2,82.6,86.5,77.6,76.1,73.7,87.6,73.1,69.7,70.2,
68.7,64.1,86.0,104.5,90.7,89.7,67.5,66.1,68.8,69.7,72.5,73.6,73.2,71.6,80.7,68.5,64.2]
y=[65.0,74.2,69.8,76.1,75.3,77.4,76.7,77.4,76.7,75.5,67.2,66.2,64.1,76.1,68.4,67.2,64.9,
65.7,60.8,77.9,95.8,80.2,80.2,63.6,61.9,64.7,62.9,66.4,63.1,67.4,68.9,70.3,64.6,59.6]
alpha1=0.05
alpha2=0.01
x=x(:)
y=y(:)
n=length(y)
SST=sum((y.*y))-(sum(y)).*(sum(y))/n
lxx=sum(x.*x)-sum(x).*sum(x)/n
lxy=sum(x.*y)-sum(x).*sum(y)/n
SSR=lxy.*lxy/lxx
SSE=SST-SSR
df1=1
df2=n-2
df3=n-1
VR=SSR/df1
VE=SSE/df2
Fb=VR/VE
F=finv(1-[alpha1;alpha2],df1,df2)
F1=min(F)
F2=max(F)
if Fb>F2
tst='**'
else if (Fb>F1)&(Fb<=F2)
tst='*'
else
tst=' '
end
end
format short g
tabl
%方差分析表
x=[76.9,82.1,80.1,77.1,82.4,85.1,87.4,85.2,82.6,86.5,77.6,76.1,73.7,87.6,73.1,69.7,70.2,
68.7,64.1,86.0,104.5,90.7,89.7,67.5,66.1,68.8,69.7,72.5,73.6,73.2,71.6,80.7,68.5,64.2]
y=[65.0,74.2,69.8,76.1,75.3,77.4,76.7,77.4,76.7,75.5,67.2,66.2,64.1,76.1,68.4,67.2,64.9,
65.7,60.8,77.9,95.8,80.2,80.2,63.6,61.9,64.7,62.9,66.4,63.1,67.4,68.9,70.3,64.6,59.6]
alpha1=0.05
alpha2=0.01
x=x(:)
y=y(:)
n=length(y)
SST=sum((y.*y))-(sum(y)).*(sum(y))/n
lxx=sum(x.*x)-sum(x).*sum(x)/n
lxy=sum(x.*y)-sum(x).*sum(y)/n
SSR=lxy.*lxy/lxx
SSE=SST-SSR
df1=1
df2=n-2
df3=n-1
VR=SSR/df1
VE=SSE/df2
Fb=VR/VE
F=finv(1-[alpha1;alpha2],df1,df2)
F1=min(F)
F2=max(F)
if Fb>F2
tst='**'
else if (Fb>F1)&(Fb<=F2)
tst='*'
else
tst=' '
end
end
format short g
tabl
1. finv用来计算分子自由度为df1分母自由度为df2的累积分布函数f所对应概率p的逆，更详细的可以查看MATLAB的帮助。
2. format用来调整变量的显示形式，short g即调整为显示4位小数（如果是整数就没有小数了)
3. 如果有输出变量就把table赋给第一个变量，否则直接显示
4. disp即显示
建议你多看MATLAB帮助，那样你了解的更全面，收获会更大