MATLAB: How can fill a table using a loop

cumsumcumulative sumfilling a table using a loopMATLABmean value in a table

hello I m having a problem filling a table

let's say I have a table

a c

…

I want c to be the mean of a starting from 1 to n

for example

c(1) = 1

c(2) =1+4 / 2

c(3) = 1+4+10 / 3

c(4)=1+4+10+11 / 4

… n

how do I fill c using a loop ?

thank you

No-loop method

There's no need for a loop.

b = cumsum(a)./(1:length(a));

Loop method

If you must use a loop...

b = zeros(size(a)); 
for i = 1:length(a)
    b(i) = sum(a(1:i))/i; 
end

If you want that in a table,

t = table(a',b','VariableNames',{'a','b'});

TablE(TablE.a == x, 2:3) % x is a numeric scalar , use strcmp(...) if it’s a string or a char

Use rand and cumsum together:

N = 3;
A = rand(1,N);
B = cumsum(A);