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If you are given an array with 3 different columns, how would you find the average of the 2nd column?

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Dustin
Dustin 2014년 6월 23일
마감: MATLAB Answer Bot 2021년 8월 20일
the first column represents years, 2nd is cases, 3rd is infection rate. how to find average # of cases?

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Image Analyst
Image Analyst 2014년 6월 23일
meanCases = mean(theArray(:, 2));
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Dustin
Dustin 2014년 6월 23일
would that be the same thing as meanCases = mean(cases(:,2));
???
Image Analyst
Image Analyst 2014년 6월 23일
Yes if your N row by 3 column array is called "cases". I didn't think it would be because cases was only the second column, with the other columns meaning different things , so I didn't think you'd call the whole array cases so that's why I called it theArray.

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