Statistics_2_-_Spring_2000_-_Rice_-_Midterm_1

Statistics_2_-_Spring_2000_-_Rice_-_Midterm_1 - Statistics...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 8
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Statistics 2 Page 1 at T Statistics 2 First Midterm Exam Spring 2am] Printed Name [Pleaee aiaa print yam flame at the tap of each page; Signatum Student I'D # .__ Circle your TA: Susan Altar Nicola An-nairang Tany Hua Pawel Laeietr.‘ Michael Habana There are 5 problems an the exam 1 2 “um- ==__—__ Shaw your wertr. Ne eredt‘r win be given for eerreet anewera without justifieatfen. A correct arrawer with Mr: JI'aretr'fiaat‘i-nzrri er incorrect reasoning wm receive an ere-art. rid—n REMEMBER. YOUR. EEGHEE Chat E-E F‘FLEETIGIGUE: 'IF' ' MaHE ar- ‘rau EVER. alacaaateHAT I HHFFEHED HERE. I L.._..._.. —I--.' I'lLIijjfr'lfim|_-wu'chflglgyIrgglLLI'tlfifirfilrl'iUE."HtflEJITI1id] -Eflflfl.htntl fi-‘ESL‘UGE Statistics? Tall Guys ankier in Love, Scientists Confirm r'IFSfTF-fhl'l I'I E'HIEE girls in hifli‘tEJCht'Jl'Ji. it wasn't “11.11 imagi- natieun. Maw resent-eh suggests that tallr-:I men an- |||L|-|L' likely tL1 rnarryan-fl [rat-:1 ta haw.- rrnrre children than shart guys. t'e'hat‘a haltian the phanamanan whether nernenprel'er taller m 3“ GI “WISE! rhea are simply mare nuigrrirlg — 'u' up I'u-r flehata. Eat the hnlnhers etehttyataelr up against :shhtter guy. I lit seemed as it the tall guys get a]! the Polish and British scientists studiee'I the I11edieairemrds rrl'rl hant Ellflit E’ulish |11Ft|1 ages 25 to man-:1 funnd that childless men wen: errata-rage inches shurter than men whn had at least tine ehilti. Parameters wereahunl ilrlllllt'J15il-I'EIIIIFI'E‘II1- average than married men. that was true even aher reseatehers ta-‘rlt intn aeeeunt the fuel that int-.n‘sheigltls increased in re tent ll-tflJ-ldflu' tleeause ult-efler l'lttitltlL'lt'l and health care. 'lhe reeardsga-hiell. were cells-{steam ‘t‘r'raela'a', Patamt inn-m 19331;: 193?, slums-art that tall men in their 2th.. 30s and stilt-all] hull nnne ehitdren than their short- er peers. Height didn'tseem tn rhstter far men in their Sits. t-tnhin t.|'-.'l.l'hmha1'at'the tlnis-‘ersire afla'lrerpenl saifl rlml is batsman: these men Ifilrne L-l'age atte: Wurld War It —a rattastrephe that claimed the lira at many i-‘nlish men and tari near] wamah's .l a .: marine entinas. Hanan—.1, tJIurLIJar a'dill the Hum-DEEP.- elc-a I If alt-aw that name-n tat-tn ta | In? I me n — sumulhjng Iltat athel'researrJ'L suggeatfi is: true aeressall cultures. "Basiealh', height isa amas- Eur uthel variablrs than war-nan find dasira hie — men when earl parted them. pl m-i-rle “1 Em Wit l'l nominees. have Free-d sneial statusantl aren't easin- dmni natart he at her men." said LZIanIJar.ag:urL1tess-1I: at eerrtntir-narjr psy'ehalafry and tl I e stud-I": ea-anttLU-r. The findings were published il? mil-FIVE issue uflhe imnnal Nature. l:'_l-I:It atthe military sen-it‘ll remrris fit -‘F_-‘rl'I|] man. the tesearehers L-a-L'lntleli men whu era-re alt-n rmnal Isr sham t'l-l' tall. The useragclmjgl'll at Il'tFt 3,2flttmenwht1sere- enr-‘J wen: pail le'lhn-ir final sanmle was-:5 tenth. 1."r'hile nthL'r studies Inn-t: shut-m tltfll [alter—thanheeraee risen have higher in- I_'I_:-Lr|-'_*.3::=|J|LI.Str'lftinlfiifltlli'll'lfil1fi-l'lnt'htil'mtrt. this study is the first In dams-narrate a link between heightrlrnl leplualLI-ttive meme-s. lt:n'r[ flat-at] liLtaE,.'J pruleasu-r elf pas-aiming? .1 t the tlhh'ersn'y at" t'utas at Austin. Dunhm'said he uadertea}. the reaeennlt atterneLieirlglltati1111eflfll'lfilfidfi-TI'ICTI sni- s'ertise their height arsty'itthefal'e HI” {II [after than average. "Tn-u didn‘t see am; advertisements say- ing,‘1’rn 5 shut lain“: me it L‘Jlll,' " hes-aid. i 1 Page 3 111' T" i4| Dar-s the study demunsmnr: persuasively that height is a l'aetarthal enusas wnmrn Le marry man? Answer Yes hr Na amt tn'iel'l 3' esp-lain. h|L11:r'lslaL—www.heI'ttetes'-edur'users."rien-‘Slatfil'rnitll -1tltlttl.lnml Fr." .13.“ liltlfi Elnlialicn 2 Fug: Ti 11]"? 3. fl lab-1L: l'IJImunlhlj' rum in u mrtm'n ring.“ 5:; .illnwu harm; has-ed rm pricas nf 21m I'CTIILIl ilnl15. Thu lab]: shun-3, [LL-— caamph, mm 31] mum] Llrlilb wurr, in We I'flngfl 5mm In Him]. .-"u[| Lh-E I'CJ'IIE in thc Bil}- WCE'E: Incl wuun 560'] and 52004]. Ram: [in Linllnraj Humhernf units HIM-EU“ 3U HUD-1me L20 " WISH-15130 4'1} lSGD-Efl'fifl It! [a] [-1] Graph the Marc-g ram. whaling and marking Ill-II. hurlwnla] and 1rust-find mus L'kfflfljf- {th |2| fl. I'Eannnahlcemiluatu fIIII'IhI: median rant 1'5 ,, .EflpI-Hin yuurzmawur L11'ifll'lgr'. [u] [2]T11131_I'FI'|'_1I:'|'L]U;—1I¢|‘i];1'i5i:ltiluu1 . le‘llflil'lj-‘IIIUI'BJ'IEIR'EE' 'I'rl'lEflj.-'- [dj [2] '11]: 3D nf the mnti is abmll {Cir-:1: we}: 5'3 LICHII 3'3"} lfl'E'U. Explain yuur E'lri'fl‘u' EI' hJ'i-Efl}: iItI:|1-:.".I':=.LuI:-www.ltum'lccichfllI."I.15n:r5.-'rj UmSlulZu'n'JidL-flflflfl.htrnl fiflififlflflfi Slum-flee? Fuge4ni'? 3. [fl] 1:1 21 Stu-{13' er‘ men aged 15; [n 35, :1 hiemgram L'd' 53'510111: bleed 1}I'e3311I'—3 WEE ffiund tu [Ulle‘r'r' the Hen-rm] eun-e eleeely. The median preqqure was 121'] mm and the lewertluurlfle was H154. Wham-113 the 90-11 percentile. prTLUiWHHLHy? Slum 1mm wet-I'LL bu]: :fl'el :1 I - w w w . he I'I-rel Effiflw'ueerfih'jeflSIfiQI’fl :1 1 £13m] . h I I'll] EIJ'EEIEDUS StatiitJCS 2 Pug: :'1 I‘II' T" 4. [cl-l Which {If LI'Iifi Iifitnf cnrchaE'IL-n cucl'ficic‘nlu 31: mm which L'Il' IEIE figures: .EIIIII, .TE, —.E.[.II, —.&ij. Wrira the :nrrclatinn cucfficjcm in much brim. Explain Emll' I'ezlmning hricl'ly. -'_:| ..-_.: I I I | .2 . ii- _I 1 r 3-5:.- 1 I -‘ .r I u ELL}. _r. I n';. : "J '- 3 C _ - El _ _'- ' r n" '."- I- : l '1 I': I : 1 : .1 - ' . ; .II . . i | . . 2 ' -2- ' l I _3 . _ .3 . . _: -'.- :3 "" I |1 -'1 -.d {I 2 4 a 3." —— — 2 2- _ _'r 1- _ | _ .- "1. .-.. _ . r .I‘w a x u- - U 'I- as". "' -1- ‘33— I 15-” 1" I.‘ .2. ‘2 .3 .L :- n 2 '1 "‘I -2 * 2 d httflqHflfl: www.hunkch;3mL11|.I'LI'_IL;TI1.I'1'iI:e.rStflt2."miLll—EUUIDJIEM] W23."1UE Sielnllee E Page fl 4;!" '3’ 'J. The J'eul lewing 1ahle ehnwe The pereemege nf elee-Im] dn'niam‘e 111 each er" eevertll ages in e emell nud- 1.'.':'.elu.:n|. Imm. Percent drink-en {a} [T1,] T5- Ihe em-rr-Iminn heme-en age and the pereeurege UI :ieH-dr'fnker's: pueiljw. negeli m: m Lem? 'Why'i' {b} [2] 11' age were rem-ruled in Innnthe ineteed UJ' yeere the eumfluliun between :Igr: and parentage fif clrinLeJ'e wenld'. de'cfa'e'am'e (“creme remain rile mme. {Harie [me and explain briefly. Ike] [3] The table ehuws Ihel m: a perenn age; he is less like];r lu drink. True LIF 111154; and why"? I'LLtp:HE|1|_|_-'.'.'1.'."r'u'.bUTkUlUF-L!iI.I.JI'ILLW1'.5.'IF]CIEJr.l'§-Lfltllrl'r'li111-2”r}.l'|t]'l'!] $313} lflflffi Smiflicn 2 Fag: T hf '.I' E. A law :chuul final}; lhr; I'I;:-|h:uw[ng, J'filflLiflt'lfiE'lip herwcml LSA‘FECMCS and first-yum sumua. Th: EIL'ElllILT diagram Wat: [unlbtfll shaped. Awning: LSAT 3:117: = 31 HI:I = 1': A wtralgr: Fi1'.-:1-‘I"rru:r Heme = {:3 SD=15 firm elalinn = .f: [HJ [2] What wnulrl yrnu predict tn he tlu: first-yum scum uf sumcum: whu Uhlfljl'lu'll 23 m1 HIE 15 AT"? 11:} [1] Cup} }'1JLJJ';:J1$w:r I'm {a}: 5th Lhe hlanlc helnw. 15 [hits EEHETIIEIIE true C-l' false and why? "If mmenhe scored in tlu: first gram. '1: 11. unld ha: reasonable in tumult Ihzll miscln’a acme m1 Lhe E-.‘-§.-‘I.'I' Ln he 221' points." 0:}: ll] Gf pmplu: in the 1‘3"" pcrc-cnljlc Ul' LSAT 5w H1151 a[:u]}1'n.~:irnme1y wEHL pmpnrtinu are HI: nr about: {Eh the 1. percentle in first year 5mm? h:|[1:H5rat-www.heI'k—E|Eyedufusemh'icflfiufla'mjd1 £flDEthn'Ll fiflfi-flflflfi hie Page ] ef' 1 1- Me. This is an ebservat'tenal study. net at eentrelterl exj'iet'it'nent. 'l'he assee'tatien eetlltl he eenfeultdeel with ether vanehlee. sueh 115 health. fer example 3 ta] I11 I ei's'al MHJ-HEHJ IthJ-EHEJEJ th'J ftretmd the middle 01' the inlervfli HHU-HJUEL savli'é'flfl [e] flitfll‘tfl since 25‘}; ef the data are greIIIEJ' 1mm 51' 1 [NH [i1] 53th) sinee the rte-lg:- et' 11:...- data is a titlie name than 4 SD. The ether eheiees give :iLh-EJ' ten malt}; er tee few SD fer the tetzti range ef the slain 3. The Uttm percentile is aheut H4-The interqtiartile range. HIE—132. eentains 513% at the data and eimspends Le- a F. scene at plus er minus .63. Se SD : |t-‘..4t1. Te- find the EttJ-fl" percentile leek J'er EU‘H: eentral area. 1.vhieh gives 531-3. 4- l.aheliltg aeress the Imve: .90. -.ee. -.E:". 3'5- 3. La) phsirive. [ht remain the same sinee changing unite dtteen'T Change the cnl'l'Elfltifln. {U} Ella-ti. SiFIEE this iseress seeliena] tEata rtrit leltgituelinal data IS. [u] 13 is 22'} 51': less than average. t-‘er first year prediet .e s {7—H} SD less than average er fl peiets has than average. En I‘trfltiietit'tlt is Iii-E. [In] The statement is false, since there are twe ssien lines. t'e} The Tin” pereent'tle eerreepe-nde In 3. :e-ewt'e = .Etfi. The pl'Edi'flEIi I-SBUTC I'll U1? r1131 W's” 5-5 it I If? n : "av. 'l'his eerrespends te a first year eeere eF fit"- + 3‘} 'F. 15 = 73.35. 111 that vertiea! strip, the average is T135 anti the SF} its The HMS crml' = 13 {Ming th‘ l'UTIIJU'r’It- The 'i'fi'h [_1t;‘rrI:-Et1Tt|-:E ef first: Ere er sen res is 433 + .155 .s 15 = TT.Tfi- TTJE — Tit-.35 = 3.9 wh'teh equals {1-325 SI). The area ten the right 1'11 1?. : H.325 'ts abetll 315%. Se er" these with were in the Tim pereent'tle en the LSAT- abem 31:395- WEI'e in the Tim percenlilu iTI Hal: Iii-st year- E11tIt1.I'.-'sLeI:—'t'v'tvssu'herhelev.eelLLuf u sereffieeffitalli’reid | it JUHHeEnJmTJJ W2 319903 ...
View Full Document

This note was uploaded on 10/31/2009 for the course STAT 131A taught by Professor Isber during the Spring '08 term at University of California, Berkeley.

Page1 / 8

Statistics_2_-_Spring_2000_-_Rice_-_Midterm_1 - Statistics...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online