Does this plot give the actual error autocorrelation? Is this correct?

[kristin pathirana]

because correlation can't exceed more than 1 and how can I correct this?

Answer 1

[Greg Heath]

Read the documentation regarding the value at zero lag.

 help ploterrcorr

 doc ploterrcorr

Hope this helps.

Thank you for formally accepting my answer

Greg

[Jakub Kudlacek]

The documentation says that at zero lag the correlation equals to MSE. But what about other values that are greater than 1? Probably I am missing something important here, can you explain it to me please?