统计和matlab编程基础

a=[130,138,145,150,152,155,160,164,165,167,170,172,175];
b=[2,1,3,6,1,3,1,1,3,4,3,2,1];
n=sum(b);
raw=[];
for i =1:length(b)
    new=a(i)*ones(1,b(i));
    raw=[raw,new];
end
ave=mean(raw);
md=median(raw);
sigma=std(raw);

i=1;
n=5;
sum=0;
while i<=n
    sum=sum+1/i;
    i=i+1;
end

在这里插入代码片