autocorrelation
noun
au·to·cor·re·la·tion
| \ ˌȯ-tō-ˌkȯr-ə-ˈlā-shən
, -ˌkär-\
, -ˌkär-\
Definition of autocorrelation
: the correlation between paired values of a function of a mathematical or statistical variable taken at usually constant intervals that indicates the degree of periodicity of the function
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