equivalence law of ordered sampling

equivalence law of ordered sampling

[i′kwiv·ə·ləns ¦lȯ əv ¦ȯr·dərd ′sam·pliŋ]
(statistics)
If a random ordered sample of size s is drawn from a population of size N, then on any particular one of the s draws each of the N items has the same probability, 1/ N, of appearing.