strat·i·fi·ca·tion (str t  -f -k  shn)n. An arrangement in layers or strata. |
stratification [strat″ĭ-fĭ-ka´shun]
arrangement in layers.
stratification
1. arrangement in layers.
2. in statistical terms the division of a population into subpopulations on the basis of specified criteria such as age, breed, parity. See stratified random sample.
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