1.

The normalized auto correlation ρxx(l) is defined as _____________

A. \(\frac{r_{xx}(l)}{r_{xx}(0)}\)
B. –\(\frac{r_{xx}(l)}{r_{xx}(0)}\)
C. \(\frac{r_{xx}(l)}{r_{xy}(0)}\)
D. None of the mentioned
Answer» B. –\(\frac{r_{xx}(l)}{r_{xx}(0)}\)


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