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How do I Run the below program? The sample program sums various column vectors. How do I Modify the first of the program (i.e., ignore the xsum2part) to calculate averages.

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Chris Herdelin
Chris Herdelin 2021-9-3
回答： Prince Kumar 2021-9-6
x=[1;2;7;5;9;3;6;9;1;11;1];
xsum=sum(x);
xsum1=0;
for i=1:11
xsum1=xsum1 + x(i,1);
end
disp xsum;
disp(xsum);
disp xsum1;
disp(xsum1);
xsum2=0;
for i=1:11
if x(i,1)> 4
xsum2=xsum2 + x(i,1);
end
2
end
disp xsum2
disp(xsum2);
  1 个评论
Mathieu NOE
Mathieu NOE 2021-9-3
hello
why not using mean with the correct dimensions
help mean
mean Average or mean value.
S = mean(X) is the mean value of the elements in X if X is a vector.
For matrices, S is a row vector containing the mean value of each
column.
For N-D arrays, S is the mean value of the elements along the first
array dimension whose size does not equal 1.
mean(X,'all') is the mean of all elements in X.
mean(X,DIM) takes the mean along the dimension DIM of X.
mean(X,VECDIM) operates on the dimensions specified in the vector
VECDIM. For example, mean(X,[1 2]) operates on the elements contained
in the first and second dimensions of X.

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回答（1 个）

Prince Kumar
Prince Kumar 2021-9-6
You can use "mean" function to find the average. Please have a look at the code below :
x=[1;2;7;5;9;3;6;9;1;11;1];
avg = mean(x);
disp(avg);
Please refer the document for information : mean

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