cross-correlation

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cross-correlation

[′krȯs kär·ə′lā·shən]
(statistics)
Correlation between corresponding members of two or more series: if q1, …, qn and r1, …, rn are two series, correlation between qi and ri, or between qi and ri + j (for fixed j), is a cross correlation.
Correlation between or expectation of the inner product of two series of random variables, where the difference in indices between the corresponding values of the two series is fixed.