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Dyfyniad Arddull ChicagoKenney, J. .F, and E.S Keeping. Mathematics of Statistics V.2. 2nd. ed. New Delhi: Van Nostrand, 1965.
Dyfyniad MLAKenney, J. .F, and E.S Keeping. Mathematics of Statistics V.2. 2nd. ed. Van Nostrand, 1965.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.