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Unformatted text preview: PS‘FJ'.‘ 2013 ital! 2011} Exam #3 Name: Gentml instructitms: Write wur nanu: above. Write all answagon ﬂEEEpagﬁu For multiplechoipe items, (inje your answer
Elmint. li you change trout answer, malt: it dear whatyrour h'nai choice is. He EEEE show all wpr_ it you did to came up with your ﬁmefﬁ If you tend t1: tie mess1', pleatt: underline or out boxers around your answers [newerthelesh LIIease tryto Imrite heath”.
[here are 55 possible points; your score Iwill tn: the percentage af'these points that you earn. Good Eoile For this part ofthetest, for each quﬁtion chime the one but answer. 1i II} in Emerimenl A; there are three treatment mntlitidris with M1: 5. M2 = 1:: and Mt— — E. In experiment a there are
IJII'EE treatmEﬂt mndltims with MiE. ill12:19, and M.=ﬁ12..ﬁssume that the S‘IITrIpIE‘S sizes in both experiments are the
same. Which experiment has a greater value for Minn}? Won don't have enough hfonnatlontocuhwte outwith“ 6/) Ennerir'r'rent A ﬂ the. ham. the same MEN...“
[EmmiINT E d there's I'Itht enough information tia decide 2! [2] When the null hypothesis is true in :5 ant: tacmr AW?” the expected value for Fm is D E." {i 1:. much gfeatt'r than 1
_ 3, album 1 .163 the critical value oI'F 3] [2} In an MDUA, which till the foliowing is most likehr to produce a large value for the .F ratio? 0
ﬂ l~'.''E.'I;’.L mean differentesand large sample ﬁgmup] variances. 6; large mean differencesantl small umple tgmu o] uariantes
a. small mean differentes anti large ample [group] variance:
:1. small mean differences and smelt sample [group] variances at [2] Two footers are said to Interact when
D
{@ hath faetm an: t'qualhr influenced 1:1. a third factor
both factors produce a change in the subjects' ecures 5.. the client afﬁne Tartar differs til. elilterent levels of the second fattor
d. themH: fatlurh are differentially affected by a third fatter Bi [2! In a tworumor mom. a main effect is deﬁned as E" C5: thE difference amnng the means dfall leuels ol' om: [actor
[llt' tiiiferende amdng,r the means or all treatment
CQnUrﬂDﬂS t. the d'i‘lfererrte he'lunHn the largest treatment Hogan and
the smaﬂeat treatment mean
gthe difference between the means 01' the two ﬁcmrs. 53 {2! Pearson' 5 Wri‘lﬂtlun coefﬁcient {.r] for the dulo dtpﬂzl'ed' 1n L lhe smtterpiot at right mull! be
a. Jun1.1:”? ‘1 d. between [rand 1
between [I and] e. etaﬂlt ‘[
l3. enacthrﬂ I T] {1] The more tigarettet a perm" I'm; smutecl mrer his or her lifetime. thezreater the probability that the person has
developed lung cancer. What is The direction of the correlation between thm m variahlﬁ? a. negative 6:} FHJSITI'n'E'
{L79 b. no relationship I: I'x' Equal to abdut Ell . there' 5 not endugh. information to: say 3} I3] FIJI the failowing four correlations, rank Ihum in outlier fmm the strongest tn the weakest relaliunship 3’ a. :=p.2s Strongest ‘04'15
b. .r=D.T5 Indstrongest ”350
c. r=+E.5J 3rd stmrqaest ' 1315
d. r =ll:l.'.l2I Weakest 4' ﬂit. '91 [SI Using a lﬂpm'nt sale, [we managers innuleitienljentlI.I rate the performance :3me same ﬁve salupeeple. The ratings
E. appear below. Higher stores Indicate better perfunnanne spate in? mmnutatiarﬁ tar mm: {W mumw m n. [ZIUtiinz thegleph a‘tright, drawascatterplelul' theac data. 1“
{ l:. [1 State what the direction Di the relationship betweenﬂse
mrp managers' ratings appears To be. WWW; E. {I} 51312 WhEthET'HDU find the direction trithe relationship
15' sensible ur nut, and ['ilier'llI brieﬂy] explain 'I'Dllr answer. . l 4?in the direction m be
11133 "Smith: Lﬁﬂate when:
appears +0 be e Etiehg _
Carveamine bcﬂueen may{agate thﬁermwmtn ‘1 l3} CDmPUtE the meektier: batman them managm' ratings. I'vt: computed 55.: [it's 22} antiﬂ, :Iit's IE] for 'I'Dul but
'3 you'll have to ﬁndSII' murself. I: __L ;__715.,/ 1D} {4] Several factors influence the size of ﬁ'lE F—ratio lthat is, Fm]. Some fauors inﬂuence the nu mera‘tor and others Inﬂuence
Ll the denominator. For each ofthe following. indicate {l:II,I circling your choice) whether the letter inﬂuences the numerator
or denominator of the F1 atie and titLowrnine whether [lli. effect would be to inertest. the uelueot Fllerther From zero) or
decrease the value of F [deserto zeml. Ir ead: case, assume that all other factors. renun'n uunstant. a.. {2] Increasing the difference amongthe sample {groupi means
affects mim r denominator WWW
must"   r Fto get smaller bf tn. [1 increasing the sample [groupMarianas 1&th h.
aﬁectsthe numerator or /
causes Fto ge_t limo I‘m 11] {20] An imigator wishes to determine whether alcohol consumption causes. a detmnration in the perineumn: nl’
automobile drivers. Before a drieingtﬁt {in a driving simulator}, subjectsdranl: orangejuicewith either zero, one: or two
ﬂIJI'IEM ﬁt ”mils1 added. Performance is measured he the number oierrors made on the simulatorfhigh scores indicate 1 Ll worse perfusmance}. Here are some summary data: ouIn dire a. [2] What i: LIrI: independent 1«suiuhh: in this experiment. and how manlI levels does it have? i. emcee bl? mun —— 7
b. [2] What is the dependent Irauriahlie in this experiment, and ho‘laris it measured? L Drawn; Paxton hence 7: Q c. [B] Cmplete the following summary.I table. 35.1““ has alreadlf' been computed! Scume 51% HF M5 F Between ﬂ.) Mil lei ﬁ' '15 Within ti Jul Lf i or", 4.x”! IF]. —_ 3
lotal ran 55 N. = 15 2. _
l d. [1] State the crItIoaI value for the F—Ieclo. Set o: = .05. it'll: 1 5? M —/’_ t e. [1] What is your decision 313mm": Reject or retain? Kala??? _ .2: f. [6] Tuheyfs H30 = 3.1"}. Lise this I.ralue to draw a speciﬁc conclusion about earh oomparism below. {21 Bounces us. 1 ounce :1} 4] ounces us. 2 ounces [2 ] ounce us 2 IL'ItII‘IDIE‘S V v V
II: 35 15 die"? emetic: My, Mlml 1: 12] [14: Most sportsinjuries are immediate and obvious. like a intuited ankle. HDWEUEF, same can be mare subtle, like the
multilupjcal damage that may neeJr when saucer playerr. repeatedly head a sciccer ball.Tc1 eaaminetl'le lungterm effects
F1; of repented heading, researchers examined two different age groups cllsclucer players and swimmers. The dependent
variable was performance an a conceptual thinkirg 135k: higher scares indicate better pealurmanw. HuputhelicJI data [rum
a stutlllI like this [with n . 21] subjects per cell} appear helclw: laEtIJd' l1: age
college __ either
M: 1i. 55 = 390 EDGE?
Fct A: rt “1
am SF” swimming M=B.SS=SSU M=s.ss=4un 3”
'51 Le a. la] Dcuesthere appear th be a main elfett of factor A? Answeryres or no, and describe brreﬂv what it is that makes Wu
1 think there is a mum. effect pffpmpre We it. {1 1mm ewet: "ottlﬂuet the WEN '1‘” ~'*~3"""~"""il
operag3. 1a 1.2:. cliLUé I. teeth:1 '1'1 sat1 3131213211”. Mr [1. l1] Dneeﬂ'nere appear to be a main effect of lactcir E? Nisurer'yrﬁ Brno, and clacribe l:rie‘l'l.I what it is that makes Iran
‘1; think there is a main effect ciffacterﬁ. Tl‘EiE 15. L1 1‘1”? ' 341: err  ..'.' cane9e. we: §_'~'.' 1a. 11:
i: 1m=.r":" .. '. Hie” cli‘IEi‘ . c. [2] Dec: mcr: appear tu he an interaction buttween factors A and E1? Answerer: arm. and destriheverv hrieﬂ'grwtmjt
C} is that makes yep think there is or Is net an interaction. There '13 $5? 'mitemtheh *3 1'; H11: 'ﬁti‘i‘mence: between
411111: ictﬂlﬁ i5 nei 41%: Same. 5 d. [3! rill In the mlssmg values in the MOM summary able below: Between treatments 3110 3
31mm tel no 1 E 101' mTI_1
ass {a} 131:: 1 e1. 1% “i /
m: Hinterarsim E _' ‘12“ iila' 1 within treatments I: jg E 1313' 1550 TS 134 :1} 1112 leliuwing matrix presents the mulez efa tumfactor experiment withtwe levels of [actor .1'1. andtwe levels effactutr
Ii EL lach value in the matrix is the mean SEEII'E‘FDI'thE subject: in. that treatment ccmditiun. Notice thatclne of the mean
values It mittlru. leura
e: 152
Famm M “I!
.1112 31:1 1 a. [1] IWhat value should be assigned tn the missing I'I'IEHJ/ED that the title wﬂuld the“ H0 main Effect fill factor It? ‘ b. [1} What value theuld he awgned tn the mgirg mean 51:: mat the danwould 511m llD interaction? (15 “i 6’9...
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 Spring '08
 McDonald
 Psychology

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