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Efektivnost proceneEfektivnost procene je ispunjena ako je disperzijeprocenjenog parametra minimalna, odnosno1N2 xˆ a minD xˆiNi1igde je ɑ - najverovatnija vrednost merene veličineine.Minimalnavrednost disperzije dobija se primenom izvodaaNi1odakle se dobija2xˆ a 2xˆ 2Na 0iaNi11NiDrugi izvod disperzije po promenljivoj ɑ je 2N, pa jeekstremum maksimum, jer je N>0;Ni1xˆi

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