Is there any way to calculate R^2 (correlation coefficient) in Matlab directly?

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Riyadh Muttaleb
Riyadh Muttaleb 2016-6-14
编辑： the cyclist 2016-6-15
I would like to calculate R^2 in easy way in matlab? How can I do that?
Thanks in advance
Riyadh

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the cyclist
the cyclist 2016-6-14
The corrcoef function calculates correlation.
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the cyclist
the cyclist 2016-6-15
编辑：the cyclist 2016-6-15
I'm confused by your comment. For example,
x1 = [1; 2; 3; 4];
x2 = [7; 5; 3; 2];
correlation = corr(x1,x2)
gives a single, negative number for the correlation of these two vectors of numbers.

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