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- clear all;clc
- n=1000;
- data=randn(n,1);
- figure(1);plot(data,'rx');title('norm-fördelad S.V.');hold on
- xlabel('slumpning:');ylabel('värde på S.V.');legend('värde S.V.')
- data1=mean(data);
- data2=mean(data);
- plot([1,n],[data1,data2]);legend('medelvärde')
- xlim([0,n+1])
- legend('värde s.v.','medelvärde')
- %medelvärde
- medelvarde=mean(data)
- %standardavvikelse
- standardavvikelse=std(data)
- %DEL 2
- N=1000;
- for k=1:N
- sampel=randn(n,1);
- m=mean(sampel);
- s=std(sampel);
- z(k)=(m-0)/(s/sqrt(n));
- end
- z;
- figure(2);histfit(z)
- figure(3);normplot(z)
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