how to find correlation coefficient ?

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pruth
pruth 2016-3-11
评论： pruth 2016-3-17
hello, I have a mat file, which has two columns. file attached.
I want to find a correlation coefficient between these two columns.and p-value also. and also want Plot the Pearson's linear correlation coefficients between these two.

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Muhammad Usman Saleem
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Muhammad Usman Saleem
Muhammad Usman Saleem 2016-3-16
编辑：Muhammad Usman Saleem 2016-3-16
because you have not define a variable before
See this
a=[1 2 3;4 5 6] % creating a matrix
a =
1 2 3
4 5 6
A= a(:,2); % means all rows with second column of a matrix
B = a(:,3); % means all rows with third column of matrix
[R,P] = corrcoef(A,B) %cross correlation
R = % 1 showing good correl
1 1
1 1
P = %depends upon your data set NaN means no corr
1 NaN
NaN 1
hope this will be fine.

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