数理统计第五章总结ppt课件.ppt
.,1nxx ),(,.1xFxxdiin. )(),(11 niinxFxxF )()1()()1(, 1)1, 1(, 0)(nkknxxnkxxxnkxxxF T(x),(1nxxx .1nxxxn ,11nnxnxxkk . 0)(1 niixx.)()(1212 niiniicxxx.)()(2 XVarXEl 或或),(2nNx ),(2nNx 212*)(1 niixxns212)(11 niixxns.11212 xnxnnii 2112111niiniixnxn niiixxnns122)(11.11212 xnxnnniii ,)()(2 XVarXE .1)(,)(,)(,)(22*222nnsEsEnxVarxE niixx12)( .11 nikikxna .)(11 nikikxxnb2/323bbs 3224 bbk )()2()1(,nxxx ;,min21)1(nxxxx .)1()(xxRnn 注：注： nxxx,21)()2()1(,nxxx ;,max21)(nnxxxx ).()(1 )()!()!1(!)(1xpxFxFknknxpknkk . )()(1 )(11xpxFnxpn . )()()(1xpxFnxpnn .注：注： .)!()!1()!1()()()(1 )()()(!11jnijizpypzFyFzFyFnjniji )(zy ),(zypij.)!2()()()()(!2 nzpypyFzFnn)(zy ),(1zypn .2212)1()()(5 . 02221knxxknxmnnn， .2)1()()1(ZnpxxZnpxmnpnpnpp，.)()1(,2 ppxpnppxN.)(41,5 . 025 . 0 xpnxN ),1 , 0(,.1NXXdiin)(122212 niXX ).(2n (一一).2 2 ),(2nX ,)(nXE .2)(nXVar ),(2mX ),(2nY ).(2nmYX 2 则则2 .1)(212 nP ,|21XXnXmXF/21 ),(21mX ),(22nX ).,(nmF . 4,)4()2()2(2)(; 2,2)(22nnnmnmnXVarnnnXE则则).,(1mnFX),(nmFX),(nmFX 1),(1nmFFP).,(/1),(1mnFnmF ,|21XXnXXt/21 ),1 , 0(1NX),(22nX ).(nt . 2,2)(; 1, 0)(nnnXVarnXE则则)., 1(2nFX),(ntX),(ntX 1)(1nttP).()(1ntnt x2s);/,(2nNx ).1()1(222 nsn ),(,2.1 Nxxdiin).1()( n nt ts sx xn n ),(21nxxxT)|,(21tTxxxFn 2.),(21nxxxT);,(1 nxxf).,(),(11nnxxhxxTg n nx xx x,1 ,2521y yy yy y),24(222 s sb b /n nY YX X),(n nt tX X12X X),(),1 , 0(2n nY YN NX X ),(n nt tX X2X X n nx xx x,1),(2 N N2, .,max.1n nx xx xA A.,min.31x xx xB B.1n nx xx xC Cn n ./)(1.122 n ni ii ix xn nD D .1001,x xx x. 5, 5. b ba aA A. 5, 5. b ba aB B.25,25. b ba aC C. 2/5, 2/5. b ba aD Dx x),1 , 0(N Nb bx xa a .2s sx xn nx xx x,1),(2 N N).()(1.2122n nx xA An ni ii i ).1()(1.2122 n nx xB Bn ni ii i ).()(1.2122n nx xx xC Cn ni ii i ).1()(1.2122 n nx xx xD Dn ni ii i n nx xx x,1),(2 N N2s sx xx x2sx x2)1(s sn n x x n ni ii ix xx x122)(1 x x n ni ii ix x122)(1 0,);()1( a ax xx xa ax xp p n ni ii ix xT T1. 0)().1(1 n ni ii ix xx x.)().2(21212x xn nx xx xx xn ni ii in ni ii i .n nx xx x,1n nx xx x,1
