统计（文科）（高考真题+模拟新题）

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11᪵ILIH2012.ᔁ]ᨵᵱ560᝕420ᵨᑖ!᪵Ḅ#$%&ᐰ()*+,-./280Ḅ᪵1ᑣ3᪵1*ᵱᦪ/.411.160]5᪆]7᪵1*ᵱஹ᝕Ḅᦪᑖ9/:xᐳ3.31ᡠP(B)=75=5,17.K8ஹIIஹ12[2012•ᓅᔁ]ᩭ¡/¢£w¤ᚗ¦Ḅᑖ§ᜐᳮª¤ᚗ¦ᑖ/«¬ᚗ¦ஹbᦈᱥ°ᐸ±ᚗ¦²§³ᑖ97´¢µUḄᚗ¦¶./{|·¸¤ᚗ¦ᑖ§ᢗº»¼q+¢&¡²§ᚗ¦¶*½1000ᔴ¤ᚗ¦ᦪ
᝞À(ᓫÂ<ᔴ):“«¬ᚗ¦”“bᦈᱥ”“ᐸ±ᚗ¦”¶¶¶«¬ᚗ¦400100100bᦈᱥ3024030ᐸ±ᚗ¦202060(1)ÅÆ«¬ᚗ¦ᢗºÇÈḄᭆ᳛É(2)ÅƤᚗ¦ᢗº┯ËḄᭆ᳛É(3)Ꮇ7«¬ᚗ¦ᙠ“«¬ᚗ¦”¶ஹ“bᦈᱥ”¶ஹ“ᐸ±ᚗ¦”¶Ḅᢗº.ᑖ9a,b,c,ᐸ*a>0,a+6+c=600.Ðᦪa,h,cḄ#Ñs?ᨬᜧÔᑏTa,h,cḄÖ(×Ø⌕ÚÛ)³3Ôs?ḄÖ.Ü

1“«¬ᚗ¦”¶ä«¬ᚗ¦.,400_2«¬ᚗ¦½.=400+100+100=3-(2)7¤ᚗ¦ᢗº┯Ë/4ᑣæ⊤è¤ᚗ¦ᢗºÇÈ.7Ḅᭆ᳛ã/“«¬ᚗ¦”¶ä«¬ᚗ¦.ஹ“bᦈᱥ”¶äbᦈᱥ.é“ᐸ±ᚗ¦”¶äᐸ±ᚗ¦.Ḅ½°◀¤ᚗ¦½.ᓽP(A)ã/,ìí=0.7,ᡠîভã/1-0.7=03(3)Ðq=600,b=c=0Ô52+òᨬᜧÖ.,1ó/ô=Ø+b+c)=200,ᡠ$2=|[(600-200)*1234*6+(0-200)2+(0-200)2]=80000.11.11[2012¨ᓅᔁ]•«ᵪ?®¯ᨵᵱ?®ᕒ56'᝕?®ᕒ42.ᵨᑖ᪵Ḅ!³´'³!Ḅᵱ?®ᕒᨵ8'ᑣ!Ḅ᝕?®ᕒᨵ11.[÷ᫀ]6[5᪆]7+Ḅ᝕LMᕒ/Xó/ᑖ!᪵ᙠù!ú+ḄRSVµûḄᡠᔁ=ü5òx=6.ᦑ+᝕LMᕒ6.2.”[2012þᔁ])᪥ÿஹஹḄᦪ334,ᵨᑖ᪵Ḅ᪥Ḅ!"#50Ḅ᪵&'ᑣ)!________+.2.15[0᪆]&⚪ὃ56ᓫ89᪵Ḅᑖ᪵.0⚪:ẚ<=>?ᵨᑖ᪵Ḅ@AᓽC.ᵫ⚪ECF)!50XyK=15(+).712ᵨ᪵&NOPQ3.12[2012.▷Sᔁ]UVᖪXᨴᑁ[ᜩḄ]^ᦪ_`abO'Fᑮ᪵&Ḅdef(᝞f1—1ᡠj)'ᑣ᪵&Ḅkᦪஹlᦪஹ᩽nᑖop()125202333124489455577889500114796178f1TA.46,45,56B.46,45,53C.47,45,56D.45,47,533.A[0᪆]&⚪w⌕ὃ5defᦪyḄz!{ᦪyᱯ}Ḅ6ᓫO~'ᵫᡠḄdefCᡠḄᦪyᐳᨵ30'ᐸ453lᦪ'ᜐkḄᦪ45{47,ᑣkᦪ46;᩽n68-12=56.ᦑ⌱A.14.I2Q012.ᔁ]᝞f1—4p᪷yᑖV6ᨴḄᙳ(ᓫk஺C)ᦪyFᑮḄ᪵&⚣᳛ᑖ=f'ᐸᙳḄ¢p[20.5,26.5],᪵&ᦪyḄᑖ£[20.5,21.5),[21.5,22.5),[22.5,23.5),[23.5,24.5),[24.5,25.5),[25.5,26.5].¤᪵&ᙳ¥22.5࠷Ḅᦪ11,ᑣ᪵&ᙳ§¥25.5࠷Ḅᦪ.

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50X1X0.18=9.4.12¸2012•ᔁ¹ᙠVÂ#FᑮḄA᪵&ᦪy᝞Ã82,84,84,86,86,86,88,88,88,88.³8᪵&ᦪyាÅp/᪵&ᦪy[ÆÇ2ÈᡠFᦪy'ᑣ4,8᪵&ḄÃᑡᦪÊᱯ}U)ËÌḄpÍÎA.lᦪB.ᙳᦪC.kᦪD.᪗Ðn4.D¸0᪆¹&⚪ὃ5lᦪஹᙳᦪஹkᦪº᪗ÐnḄᭆÒ'ὃ5ÓᳮÔÕ½¾'"᧕⚪.Ö[᪵&ᦪyÇ×2È'lᦪஹᙳᦪஹkᦪÆØÙÚᓄ'§ÚḄpᦪyḄÜ®ÝÞ'ᓽ᪗Ðn§Ú.6.12¸2012♦ßSᔁ¹àÜáâḄPã«ᑖ᝞f1—1Í1Îᡠj'áâḄäåã«᝞f11Í2Îᡠj'ᑣàÜáâḄæçã«ᓰPã«ḄéᑖÍÎ(2)fIA.30%B.10%C.3%D.§½ë@6.C¸0᪆¹æçᓰäåPã«Ḅì+40+inn+an+sn=l0%'ïäåã«ᓰPJUᓝᓝ1UUᓝOUᓝDUã«Ḅ30%,ðñæçᓰPã«Ḅ10%X30%=3%.ᦑ⌱C.2.12¸2012•¨ᓅᔁ¹"#20Ḅ᪵&ᦪy'ᑖ£ÈḄ⚣ᦪ᝞Ã⊤ᑖ£110,20)[20,30)[30,40)[40,50)[50,60)[60,70)⚣ᦪ234542ᑣ᪵&ᦪyóᙠô¸10,40ÎḄ⚣᳛ÍÎA.0.35B.0.45C.0.55D.0.65

32.B¸0᪆¹ᵫ⊤C᪵&ᦪyóᙠô¸10,40)Ḅ⚣ᦪ2+3+4=9,ï᪵&"#20,9ᑣ⚣᳛õ=045.ᦑ⌱B.13.12¸2012•öᔁ¹ᵫ÷᦮ᦪ£ᡂ£ᦪyᜐ'ú'Ḅ'X4,ᐸᙳᦪ{kᦪÆp2,û᪗Ðnü1'ᑣý£ᦪy.(àᑮᜧ᣸ᑡ)13.1,1,3,3᪆ᦪᑮᜧᑖXiX,X3,X4,᪷ᑮ22-z,(X+X=4,23ᨵX|=l,=1,x=3,X4=3ABᩩD,ᡠᦪᑖ1,1,3,3.318.122012.FGᔁIJKLḄNOPQ᪗STḄUḄVWTXYZ1mm\,ᑣ](ᔠ_L,ᔲᑣ](Xᔠ_L,ᙠbc•eKLf᪵hij,JᔆKḄlmKLj,nofp5000Drsht,uvwxᨵ50DXᔠ_L.yz{50DXᔠ_LḄNOPQ᪗STḄU(ᓫ~mm),ᡠᦪᑖ,ᑮ᝞⚣᳛ᑖ⊤ᑖ⚣ᦪ⚣᳛[-3,-2)0.10[-2,-1)8(1,2]0.50(2,3]10(3,4]ᔠy501.00প☢⊤_jḄᦪᙠᓱḄ7~.(2)yᔆKḄlmKLj,Xᔠ_LḄNOPQ᪗STḄUᙠ(1,3ᑁḄᭆ᳛(3)xWᔆ{mKLḄJᢇershi,uvwxᨵ20DXᔠ_L,lz{ᢇKLjḄᔠ_LḄDᦪ.18.(1)⚣᳛ᑖ⊤ᑖ⚣ᦪ⚣᳛[-3,-2)50.10[-2,-1)80.16(1,2]250.50(2,3]100.20(3,4]20.04ᔠy501.00(2)ᵫ⚣᳛ᑖ⊤,ᔆKḄlmKLj,Xᔠ_LḄNOPQ᪗STḄUᙠ(1,3ᑁḄᭆ᳛(0.50+0.20=0.70;(3){ᢇKLjḄᔠ_Lᦪ(xD,£ᔞ¥ᨵ5000ஹ+20'

4ᡠᢇKLḄᔠ_LDᦪy1980D.19.12ஹK2[2012•▷«ᔁ]Ꮇᵬ®¯mL°Ḅ±²KLᙠJᙢ´µ├·¸,(¹º»Ḅ¼ᵨ¾¿,x{¯mL°ḄKLjᑖnofp100rstÀ,uvÁy᝞ᵬL°⚣ᦪ404040303020201010ÃÄÅÆ/Â1-8(1)yᵬL°KL¾¿È200\Ḅᭆ᳛(2){¯mL°KLj,JKL¼ᵨ¹200\,ÀyKLᵬL°Ḅᭆ᳛.5+20119.(1)ᵬL°KL¾¿È200\Ḅ⚣᳛(0É1=Xᵨ⚣᳛yᭆ᳛,ᡠ,ᵬL°KL¾¿È200\Ḅᭆ᳛(Ê(2)᪷f᪵uv,¾¿ᜧÈ200\ḄKLᨵ75+70=145(),75ᐸjᵬL°KL75,ᡠᙠ᪵Ìj,¾¿ᜧÈ200\ḄKLᵬL°Ḅ⚣᳛Í=||,ᵨ⚣᳛yᭆ᳛,ᡠ¼ᵨ¹200\ḄKLᵬL°Ḅᭆ᳛(H17.12ஹK2[2012.ÏÐᔁ]J᪥100ÒÓcjὃÀÕᦻᡂØḄ⚣᳛ᑖNÂ᝞Â104ᡠÙᐸjᡂØᑖ[50,60),[60,70),[70,80),[80,90),[90,100].⚣᳛.Ú0.045060708090100ᡂØÂ1—4(1)ÜÂj஺ḄT(2)᪷⚣᳛ᑖNÂ,y{100ÒÓÕᦻᡂØḄÞᙳᑖ(3)I{100ÒÓÕᦻᡂØJàᑖᦪáḄâᦪ(x)QᦪÓᡂØ7ᑖᦪáḄâᦪ஺)ãä᝞⊤ᡠÙ,ÜᦪÓᡂØᙠ[50,90)ã᜜Ḅâᦪ.ᑖᦪá[50,60)[60,70)[70,80)[80,90)X:᜛11213:44:517.(1)ᵫ⚣᳛ᑖNÂ(0.04+0.03+0.02+2(a)X10=1.ᡠa=0.005.(2)100ÒÓḄÕᦻᡂØḄÞᙳᑖ(T=0.05X55+0.4X65+0.3X75+0.2X85+0.05X95=73.(3)ᵫ⚣᳛ᑖNÂêḄÕᦻᡂØஹᦪÓᡂØᑖᙠᔜᑖᦪáḄâᦪä,⊤

5ᑖᦪá[50,60)[60,70)[70,80)[80,90)X5403020xy11213:44:5y5204025ÈᦪÓᡂØᙠ150,90)ã᜜Ḅâᦪ(100-(5+20+40+25)=10.17.K8ஹIIஹ12[2012•ᓅíᔁ]bîᩭ,J´(¹ðrñᚗóḄᑖ²ᜐᳮ,ñᚗóᑖ(ö÷ᚗóஹøᦈᱥûᐸüᚗó=²,ýᑖ¹7Ḅᚗóþ.(ÿ
ᚗᑖᢗᚗ1000ᔴᚗᦪ!᝞#(ᓫ&'ᔴ)'“*+ᚗ”“-.ᦈᱥ”“ᐸ2ᚗ”*+ᚗ400100100-.ᦈᱥ3024030ᐸ2ᚗ202060(1)78*+ᚗᢗ9:Ḅᭆ᳛>(2)78ᚗᢗ┯@Ḅᭆ᳛>(3)ᎷB*+ᚗᙠ“*+ᚗ”ஹ“-.ᦈᱥ”ஹ“ᐸ2ᚗ”ḄᢗEᑖFGa,b,c,ᐸa>0,a+b+c=600.Pᦪa,b,cḄQRs?ᨬᜧWᑏYa,h,cḄZ([\]⌕_`a)b_cWs2ḄZ.d'S2=^[(X|—Xk+(X2—X)2H----X)2],ᐸXGᦪX1X2,…%Ḅqᙳᦪ17.t'(1)*+ᚗᢗ9:Ḅᭆ᳛uG“*+ᚗ”v*+ᚗEw400_2*+ᚗE-400+100+100-3'(2)Bᚗᢗ┯@Gz{4ᑣz{]⊤~ᚗᢗ9:.z{#Ḅᭆ᳛uG“*+ᚗ”v*+ᚗEஹ“-.ᦈᱥ”v-.ᦈᱥE“ᐸ2ᚗ”vᐸ2ᚗEḄ◀ᚗEᓽP(A)uGI®>=0.7,ᡠভuG1-0.7=0.3.(3)Pa=600,6=c=0WᨬᜧZ.Gx=+஺+஺)=200,ᡠ$2=|[(600-200)2+(0-200)2+(0-200)2]=80000.13.12[2012ᓭᔁ]1—3᪥wᳫᕒᙠ¡¢ᡠᑖᦪḄ£¤ᑣᕒᙠ¥¡¢ᑖḄQRG.(d'QRXk+(¦2—X---F(x„—X)2],ᐸXGX1X2…X”Ḅqᙳᦪ)0891035L313.6.8[t᪆]«⚪®£¤ὃᦪᳮ!ḄqᙳᦪQR±ᙠὃὃᦪᳮ!Ḅ²▭´ᵨ¶·>ᐹ¹Ḅt⚪º»®¼'ᐜ_Yqᙳᦪ¾ᵨQR¿À_QR.

6-8+9+10+13+15ᵫ£¤-_x=11,ÄᐭQR¿À?=|ÆÇll-8É2+Çll-9É2+Çll-10É2+Ç11-13É2+Ç11-15Ê=6.8.18.K2ஹB10ஹ12Æ2012Ë᪗ᐰÎᔁÊÏÐÑᜩÑÓ5ᐗḄÕÖ×ØÙÚÛÜÓÝᴮÏᯠàÑÓ10ᐗḄÕÖYá.᝞âPᜩᓬ]äᒕ#ḄÝᴮÏæᚗᜐᳮ.Ç1ÉÛÏÐwᜩÙÚ17ÓÝᴮÏ_PᜩḄᑭéᐳᓫ&'ᐗÉᐵìPᜩ◤_E஻Çᓫ&'Ó஻GNḄïᦪt᪆À>Ç2ÉÏÐðñ100ᜩÝᴮÏḄò◤_EÇᓫ&'ÓÉ᦮ᳮ#⊤'ò◤_E"14151617181920⚣ᦪ1()2()161615131()জᎷBÏÐᙠ¥100ᜩᑁÑᜩÙÚ17ÓÝᴮÏ_¥100ᜩḄòᑭéÇᓫ&'ᐗÉḄqᙳᦪ>ঝÛÏÐwᜩÙÚ17ÓÝᴮÏ100ᜩðñḄᔜ◤_EḄ⚣᳛æGᔜ◤_EúḄᭆ᳛_PᜩḄᑭé]ûì75ᐗḄᭆ᳛.18.t'Ç1ÉPò◤_E஻217Wᑭéy=85.Pò◤_E஻<17Wᑭéy=10஻-85.ᡠyᐵì஻Ḅïᦪt᪆ÀG10/7-85,஻<17,y=ஹÇ஻£N.
85,172জ100ᜩᨵ10ᜩḄᑭ55ᐗ20ᜩḄᑭ65ᐗ16ᜩḄᑭ75ᐗ54ᜩḄᑭ85ᐗᡠ100ᜩḄᑭḄᙳᦪ55X10+65X20+75X16+85X54=76.4.ঝᑭ%&'75ᐗ()*(◤,-%.'16/.ᦑ(ᜩḄᑭ%.'75ᐗḄᭆ᳛p=0.16+0.16+0.15+0.13+0.1=0.7.135᝱ᑖ8149-Ḅ:ᐵឋ=>?ᫀA3.14
2012•C᪗ᐰFᔁHᙠJK᪵MᦪNOP,᝞R…T஻V2,W,ᔊ…X“%ᐰ:ZḄᦣ\]^ᡠᨵ᪵M\X"%i=l,2,…஻cᙠdey=%+lgᑣK᪵MᦪNḄ᪵M:ᐵiᦪA.-1B.0C.gD.13.D|q᪆|sᡠᨵ\cᑖ8ᙠJᩩdeguv:ᐵឋwx:ᐵiᦪyᑮᨬᜧ}ᓽI.ᦑ⌱D.5.14
2012•ᓭᔁHᜧḄ᝕yᓫkg=xᓫcmᐹᨵeឋ:ᐵᐵi᪷NJK᪵MᦪNᓽi=l,2,…஻ᵨᨬḄf=0.85x-85.7bᑣ£ᑡ¥¦%§⚚Ḅ©A.y=xᐹᨵ5Ḅªឋ:ᐵᐵiB.de«᪵M\ḄG",~C.^®ᜧ᝕¯°1cm,ᑣᐸ²¯°0.85kgD.^®ᜧ᝕170cm,ᑣ³´µᐸ¶58.79kg5.D
q᪆HM⚪ὃºeឋḄᱯ¼=ឋ½¾ᙠὃºὃ¿eឋḄÀqq⚪ÁÂA,B,Cᙳ5éḄឋ½D⚗©┯ÆḄeឋÇÈ⚜ÊḄ.⌱⚗DËᦋ“^®ᜧ᝕170cm,ᑣÍ?ᐸᜧ²

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