第4章 推斷統(tǒng)計(jì)(參數(shù)估計(jì)與假設(shè)檢驗(yàn))

1、應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 12011年8月重慶工商大學(xué)重慶工商大學(xué)應(yīng)用應(yīng)用統(tǒng)計(jì)統(tǒng)計(jì)應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 2應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 3應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 72008年5月2xp2s2121222121xx 21pp 2221ss應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsAppli

2、ed Statistics4 - 8應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 10應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 11應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 122008年5月xxzx2應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 13應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 14應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)

3、Applied StatisticsApplied Statistics4 - 152008年5月應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 162008年5月xxx應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 18應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 1912應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 20應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApp

4、lied Statistics4 - 23) 1 , 0( Nnxz樣本均值樣本均值分位數(shù)值分位數(shù)值樣本均值的標(biāo)準(zhǔn)誤差樣本均值的標(biāo)準(zhǔn)誤差) 1 , 0( Nnsxz) 1(ntnsxt應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 24233539273644364246433133425345544724342839364440394938344850343945484532應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 2563.41,37.3713.25 .393677.7645.15

5、 .392nszx5 .39x77. 7s應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 261510152014801500145014801510152014801490153015101460146014701470應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 272 .1503, 8 .14762 .1314901677.24131.214902nstx1490 x77.24s應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 28(

6、 x1 - x2 )分位數(shù)值分位數(shù)值( x1 - x2 )的標(biāo)準(zhǔn)誤差的標(biāo)準(zhǔn)誤差) 1 , 0 ()()(2221212121Nnnxxz) 1 , 0()()(2221212121Nnsnsxxz應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 292) 1() 1(212222112nnsnsnsp) 2(11)()(21212121nntnnsxxtp應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 30)()()(2221212121vtnsnsxxt1222221121212222121

7、nnsnnsnsnsv應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 31nzdd2 d 分位數(shù)值分位數(shù)值 d 的標(biāo)準(zhǔn)誤差的標(biāo)準(zhǔn)誤差nsntdd) 1(2應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 322008年5月方法方法1方法方法228.336.027.631.730.137.222.226.029.038.531.032.037.634.433.831.232.128.020.033.428.830.030.226.5應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsAppl

8、ied Statistics4 - 335 .321x996.1521s8 .282x358.1922s677.1721212358.19) 112(996.15) 112(2ps56. 37 . 3121121677.170739. 2)8 .285 .32(應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 34學(xué)生編號(hào)學(xué)生編號(hào)試卷試卷A試卷試卷B差值差值d17871726344193726111489845691741754951-27685513876601698577810553916應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied Statisti

9、csApplied Statistics4 - 3511101101dniindd53. 61)(12dniidndds67. 4111053. 62622. 211) 1(2nsntdd應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 37樣本比例樣本比例分位數(shù)值分位數(shù)值樣本比例的標(biāo)準(zhǔn)誤差樣本比例的標(biāo)準(zhǔn)誤差應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 38) 1 , 0()1 (Nnpznppzp)-1 (2應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Stati

10、stics4 - 39%35.74%,65.55%35. 9%65100%)651%(6596. 1%65)1 (2nppzp應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 40(p1- p2)分位數(shù)值分位數(shù)值(p1- p2)的標(biāo)準(zhǔn)誤差的標(biāo)準(zhǔn)誤差應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 41222111221)1 ()1 (nppnppzpp) 1 , 0()1 ()1 ()()(2221112121Nnppnppppz應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsAppli

11、ed Statistics4 - 43111122122222nsnnsn212221222122221FssFss應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 442008年5月應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 452008年5月應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 48應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 49應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied St

12、atisticsApplied Statistics4 - 50應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 51應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 52應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 53應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 54應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 56點(diǎn)估計(jì)量的抽樣標(biāo)

13、準(zhǔn)差假設(shè)值點(diǎn)估計(jì)量標(biāo)準(zhǔn)化檢驗(yàn)統(tǒng)計(jì)量應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 572008年5月 /2 應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 582008年5月應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 592008年5月2 應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 60應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4

14、- 612008年5月應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 622008年5月應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 632008年5月應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 642008年5月應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 65應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 66應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)

15、計(jì)學(xué)Applied StatisticsApplied Statistics4 - 672008年5月你要同時(shí)減少兩類你要同時(shí)減少兩類錯(cuò)誤的惟一辦法錯(cuò)誤的惟一辦法是增加樣本量是增加樣本量應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 68應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 69應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 70應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 7

16、1應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 72應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 73應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 74應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 752008年5月這個(gè)結(jié)果出這個(gè)結(jié)果出乎預(yù)料嗎？乎預(yù)料嗎？應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 772008年5月 是否已是

17、否已知知樣本容量樣本容量n 是否已是否已知知 t 檢驗(yàn)檢驗(yàn)nsxt0z 檢驗(yàn)檢驗(yàn)nsxz0z 檢驗(yàn)檢驗(yàn) nxz0z 檢驗(yàn)檢驗(yàn)nxz0應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 781.261.191.310.971.811.130.961.061.000.940.981.101.121.031.161.121.120.951.021.131.230.741.500.500.590.991.451.241.012.031.981.970.911.221.061.111.541.081.101.641.702.371.381.601.261.

18、171.121.230.820.86應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 796061. 250365749. 035. 13152. 1z應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 80應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 812008年5月應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 8212.210.812.011.811.912.411.312.212.0

19、12.3應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 837035. 0104932. 01289.11t應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 84應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 85) 1 , 0()()(2221212121Nnnxxz) 1 , 0()()(2221212121Nnsnsxxz應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 86) 1 ,

20、0()()(2221212121Nnnxxz應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 8721212111)()(nnsxxtp2) 1() 1(212222112nnsnsnsp221nn應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 882221212121)()(nsnsxxt1122222121212222121nnsnnsnsnsv應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 892008年5月方法方法1方法方法228.3

21、36.027.631.730.137.222.226.029.038.531.032.037.634.433.831.232.128.020.033.428.830.030.226.5應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 90應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 91) 1(0ntnsddtdddniindd11)(12dniidndds應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 92應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applie

22、d StatisticsApplied Statistics4 - 93應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 95) 1 , 0()1 (000Nnpz應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 96212111)1 (nnppppz222111021)1 ()1 ()(nppnppdppz2221121211nnnpnpnnxxp應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 97應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 98475. 2200)80. 01 (80. 080. 073. 0z應(yīng)用統(tǒng)計(jì)學(xué)應(yīng)用統(tǒng)計(jì)學(xué)Applied StatisticsApplied Statistics4 - 99475. 2200)80. 01 (80. 080. 073. 0z應(yīng)用統(tǒng)計(jì)學(xué)