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Ocinka 8 1 K displaystyle widehat theta 1 in mathrm K parametra 8 displaystyle theta nazivayetsya efektivnoyu ocinkoyu v klasi K displaystyle mathrm K yaksho dlya bud yakoyi inshoyi ocinki 8 2 K displaystyle widehat theta 2 in mathrm K vikonuyetsya nerivnist M 8 8 1 8 2 M 8 8 2 8 2 displaystyle M theta widehat theta 1 theta 2 leqslant M theta widehat theta 2 theta 2 dlya bud yakogo 8 displaystyle theta Osoblivu rol v matematichnij statistici vidigrayut nezmisheni ocinki Yaksho nezmishena ocinka 8 1 displaystyle widehat theta 1 ye efektivnoyu ocinkoyu v klasi nezmishenih to taku statistiku prijnyato nazivati prosto efektivnoyu YedinistEfektivna ocinka 8 displaystyle widehat theta v klasi K b E 8 c 8 displaystyle mathrm K b E widehat theta c theta de c 8 displaystyle c theta deyaka funkciya isnuye i yedina z tochnistyu do znachen na mnozhini A displaystyle A jmovirnist potrapiti v yaku dorivnyuye nulyu P x A 0 displaystyle P x in A 0 Div takozhNerivnist Kramera RaoDzherelaKartashov M V Imovirnist procesi statistika Kiyiv VPC Kiyivskij universitet 2007 504 s Gnedenko B V Kurs teorii veroyatnostej 6 e izd Moskva Nauka 1988 446 s ros Gihman I I Skorohod A V Yadrenko M V Teoriya veroyatnostej i matematicheskaya statistika Kiyiv Visha shkola 1988 436 s ros
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