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Thanks, ozo. &nbsp; I appreciate the feedback.<br />
<br />
EEH
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Thanks, ozo.   I appreciate the feedback.

EEH

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I'm researching a PCA topic: &quot;eigenvalues&quot;, &quot;eigenvectors&quot;. <br />
<br />
One of the questions I need to address is: &nbsp;For a 3 dimensional date set(x, y, z) what does covariance(x, x) represent? <br />
<br />
Does anyone have some pointers for me? <br />
<br />
EEH
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I'm researching a PCA topic: "eigenvalues", "eigenvectors". 

One of the questions I need to address is:  For a 3 dimensional date set(x, y, z) what does covariance(x, x) represent? 

Does anyone have some pointers for me? 

EEH

PCA (eigenvalues, eigenvectors)

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