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What is the meaning of Sample in Sample ACF (autocorrelation function)

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It's the empirical ACF computed using the sample.

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  • $\begingroup$ @Mbaz: I'm not clear on why it's not an answer ? Maybe you want a formula. $\endgroup$ – mark leeds Oct 8 at 1:10
  • $\begingroup$ Mark -- my mistake, I'm sorry. I have retracted the flag. $\endgroup$ – MBaz Oct 8 at 2:10
  • $\begingroup$ no problem. the formula has a denominator that is not trivial so I didn't remember it. $\endgroup$ – mark leeds Oct 8 at 15:31
  • $\begingroup$ Thank you so much. $\endgroup$ – Amit Oct 9 at 15:18

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