新编统计学复习整理

%100×100%×100%12nxxxxxnnxn1122=112=1niinninniixfxfxfxfxfxxffffff()0xx()0xxf2()=xx2()=xxf12nnGxxx1212nffffnGxxx10122012mLdmUd0mLU12d1122eeeememmemfSmLdffSmUdfemLU1emS1emSemfd==maxminRxxR.xxADn.xxfADf.AD22()xxn22()xxff2VxPQN1N0N12+NNN011NNpqpNNxp2(1)pppqnn2xnn(1)Pppn2(1)xnnN(1)(1)PppnnNx/2xZp/2pZ(1)x/2xtn(1)p/2ptn+xxxXx+pppPp22/22xZn2/22(1)pZppn22/2222/2()xZNnNZ2/222/2(1)()(1)pZppNnNZppNn2222nxyxyrnxxnyyrrrrr=r=ˆyabxababxy22()nxyxybnxxaybx2ˆ2eyySn22yaybxyn2ˆeyySn2yaybxyneS222ˆ1yyRyy2R4ˆˆ(2)(2)0/2e0/2eytnSyy+tnSˆˆ0/2e0/2eyZSyy+ZSaan231122221nnaaaaaaan23112121222nnnaaaaaafffafacb10211,,,nnaaaaaa10200,,,naaaaaa102110()()()nnnaaaaaaaann×100%12011×100%,,,nnaaaaaa12000×100%,,,naaaaaa120111,1,,1nnaaaaaa120001,1,,1naaaaaa31201210nnnnnaaaaaxaaaaa2301()nniiaxxxxaˆtyabt2)ˆ(ttyy2ttybnyaS×100%100%400%1200%1000qqpIqp0001pqpq1101ppqIpq1011qpqp10000100000000qqqqpKqpqpqKqpqpqp11111101110111ppqpqpqpKpqpqpqpKpppKKqqKKpKqK