概率论与数理统计第13章复习资料PPT学习教案

1、会计学1概率论与数理统计第概率论与数理统计第13章复习资料章复习资料第1页/共48页)(1)(APAPniiniiAPAP11BA 第2页/共48页第3页/共48页nmAP)()()()(BPABPBAP第4页/共48页iniB1niiiBAPBPAP1)()()(A ABPAPABPAPBP第5页/共48页niiiiiiBAPBPBAPBPABP1第6页/共48页)()(KPqpCBPnKnKKnK,2,1,0,!)(kekkXPk第7页/共48页,2,1,0,!)1 (kekppknkknnkn第8页/共48页第9页/共48页第10页/共48页第11页/共48页第12页/共48页第13页/

2、共48页vr,vr,vr,vr,nn, )(,),(1wXwXn),(1nXX vr,vr,第14页/共48页vr,vr,vr,)()(xXPxF xn),(1nXX nvr,Rxi,1nin第15页/共48页),(),(111nnnxXxXPxxF),(1nXX vr,vr,vr,1)(0XF0)()(FxFLimx0)()(FxFLimx1),(0yxFyx,第16页/共48页yx,0),(),(XFyF1),(F,21xxx21yxy0),(),(),(),(11122122yxFyxFyxFyxFvr,vr,21ixxx,1niiiipxpxXP)()()(ixpX第17页/共48页0

3、ip11iipvr,ixxxX21:jyyyY21:第18页/共48页,),(),(ijjijipyxpyYxXP,2,1,ji),(jiyYxXP)()(jiyYxXP0ijp111ijijp1)(jijiipxXPp2,1i1,)(iijjjpyYPp,2,1j第19页/共48页 ipjpjijjijiYXppyYxXPyxP)()(2,1i,2,1jiijijijXYppxXyYPxyP)()(2,1i,2,1jvr,vr,vr,vr,)(xf第20页/共48页x)(xfvr,)(xfX;0)(xf1)(dxxfx)(xf)()(xFxf RxdxxfxFx,第21页/共48页vr,vr

4、,),(YXvr,),(yxf2),(Ryx xydvduvufyxF,),(),(),(YXvr,),(yxf),(YX),(YX),(yxf),(yxf 1),(dxdyyxf第22页/共48页),(yxf),(yxyxyxFyxf),(),(2dyyxfxfX),()(dxyxfyfY),()()(),()(yfyxfyxfYYX)0)(yfY)(),()(xfyxfxyfXXY)0)(xfX第23页/共48页vr,vr,),(1nxx nnvr,),(1nXX ),(1nxxFn)()()(2211nnxFxFxF),(1nxxFvr,),(1nXX nvr,vr,),(YX,2,1,

5、jipppjiij第24页/共48页vr,),(YX)()(),(yfxfyxfYXxy)(Xg)(Yhvr,nnXX,1,),(2iiiNX,1ni),(21211iniiiniiiniiaaNXa第25页/共48页vr,)(ixXP2,1i,)(1iiixpx)()(1iiixXpxXE),(YX,),(ijjipyYxXP,2,1,ji)()()(11jiijiyYPxXPxXE)()()(11ijjijyYPxXPyYE第26页/共48页)(xfdxxxfXE)()( dxdyyxxfXE),()( dxdyyxyfYE),()(vr,vr,)()()(1iiixXPxgYE)(XgY

6、 第27页/共48页),(YXvr,),(YXgZ ),(),()(11jijijiyYxXPyxgZE)(xf)(XgY dxxfxgYE)()()(),(YX),(yxf),(YXgZ dxdyyxfyxgZE),(),()(第28页/共48页vr,vr,)(XgY vr,ixxx21,ippp21)(XfY )()()(21ixfxfxf1p2pip)(ixf)(ixfip X -2 -1 0 1 p61616262第29页/共48页,121XY1222XY P X -2 -1 0 1 -5 -3 -1 1 9 3 1 3,121XY1222XY616162621Y62616261113

7、52Y616461931第30页/共48页)(XgY )(xf)(xgy )(1ygx)()()(/11ygygfyfXY y)(, )(minff)(),(maxff)()()(yXfPyYPyFY)(yFY第31页/共48页第32页/共48页第33页/共48页第34页/共48页,167,85,43,21cccc)01(XXP2)(, )(XDXE第35页/共48页第36页/共48页其他,01,1)(2xxcxfexdexdcxxbxxaxF,1,ln1,)(dcba,第37页/共48页其他,05 . 00,)(2xxcxxf 2,120 ,sin0,0 xxxAxxF6x第38页/共48页其他,00,51)(5xexfxX),(2N,. )(, )(YXDYXE第39页/共48页XYln22.0,0;0,)2(21)(2122xxexnxfxnnXnXY xey2第40页/共48页0,00,222xxAxexfx0,00,222xxAxexfx第41页/共48页第42页/共48页)(xF其他0102)( xxxfX)21(X)()2( YPvr,第43页/共48页cvr,其他,010,1),( xyxf)(),(yfxfYX)21(XP)21(YP第44页/共48页X-