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Unformatted text preview: ﬂew: sets [Fall 2ti‘l tJ} Exam tit Name: _ General instmctions: Write your name abetto. Write atl HI'IS'I'I'EFS on these pages. For multoiechoiee items. circle your
answer choice. If you change your answer. realco it cteer what your ﬁnal tihoice is. Ese sure to show any wont you did to
some up with your answers so lean soot moonsequential math errors. It you tend to be messy. otease underline or out boxes around your answers [nevertheless please try to write neatlyl. There are 59 possible points; your score will he the
peroontage at these poiits that you earn. Good lucltl BART  thltultt'yiachoieaquestjehs; each Ewenrs p_etnt Itrailue is indﬂted before the orohﬂ'i} For Ihis part of the test. for each question UliL'lDSE the one best answer eachding It. 1} {2 points} ﬂhoose the answer that host completes the analogy: It. stoo'str'c is to a samlote as a. an rarervatsoate is to an ordinal seale.
iljrr it: to n.
,ﬂ a parameter is to speculation.
d. a mean is to a standard donation.
is. a variance is to a standard denfatten. 2} [4 points} A population has .u — tit) and or = 15. [f you subtract titre points hrsn etrerg.I score in the population. the Pl value For the new :naarr MEI be . and the new standard dmrietion will be _
a so; to '— e. as; s
n. ; to t. ED: 3
it'CS 55; f5 9. 55: can't DDI'I'IpUlE o
cl. ﬁt]: 15 It. ﬁt]: can't meme o 3] {2 points: The standard deviation ofthe sooros in the deputation X : [1. 3. ti. to} is closest to __. {You should
2. be able to do lhie‘. willout serious computation] H.
' o. 5  _rno.
ton4 4] {2 points] P. distribution of scores hoop = on and o = B. tffour new scores of El) are added to this distribution {so
H there are four more scores than there were originally}. the mean wilt _ _. {Notice that this question is not
L about adding a constant! No oomoutations are needed here} (.._V'F‘
a. increase ‘ ' ' staytitesame
b. doth'eose cl. can't be determirned 5} [2 points] A distributim'i of Seth es heap = EU and o' = 3. llfour new scores of EU are added to title distrihuiion [so
L there are four more scores than there were edgetally]. the standard delaahon will . {Notice that this
question is not about adding a constant! No computations are needed here.) a. Increase c. stay.r the same
IEE._ detatruau d. can‘t En: dtrlrhrttinttrl 5} [2 points] ”that ”in ﬁlm Flr‘ “1F! standard donation DI a set of scores. depend on where the center is toasted? 5' a. Tea. betalusts the higher the mean. the higher the standard deviation.
, “ﬁrst, because yet: have to know the mean to calculate the standard deuteron.
C? No. the size of the standard deviation is not affected by the location of the distribution. No. because the standard deviation only measures how the values differ from each other. not how they differ
from the mean.
@ ﬁetermiuc the type ed measurement scale used in each of the situations described in quealiuns ?, FF. and 9. T] {1 point: Shirl sizevs sure classiﬁed as smelt, (“QuinnI1 large. and extra large. a. nurninai c. lntcwsl éh. Drdinsl 94/ I1 relic iii {'1 point} A researcher measures current msn'isl status as married. never married. sinarsed. widened. or n separated.
55. nnminal UK 1:. interval
is. erclinel d. raI'Iu Si] {1 point] A psychologist measures the time it takes to complete a pmblarnsehring task. I s. rutIrrIinel c. interval In ordinal 53;; relic r” PART II {shonmswsectlem each grcbiem'sﬂeinigelue is indicated beiere itI _mpleﬂ 10} {4 points} Pasterm the incliceferl mputetierrjsr the retinawing four scores: X= {3 4: 6 _i'}. Li 3.12135: ri:iio1fi{psﬁﬁ; 1&4” n (119 ; I"I" _ _“b / n. eiexr: 35sec . 11} {4 points] Oi Hie followi'lg Four stalisﬁcs — meglsn. men. standard deviation. and varigng —I.I.rhiI:.h one is not
Iii“? 1119 We. cemepmslly’? In $11ng We quesiicn. phase make it clear how the measure you‘ve chosen is
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intentiensili.r left offcf the x axis. Ne mputemn Is needed— ur possible— here.) ."'" r 12: {1' point: True nri‘fsiseei'l'he majority.I of scores are heisw the
mean. I.
a} 13} ['1 pnirltF‘T :e nr false: The majnril'y [if scores are helclw the
median.
.cr’ i 14} {1 pointl me or false: The majority cf scores are below the vi .13 é; sml'E'L‘I. The rrbeen efmie sampteie M= F. #91 I] rimI1 F93 l _ 15} [7 points] The histogram and trequency distrihuuun table betaw gives the scarce fora sample of D = 3i] quiz.
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e. {1} What ie 1hr: made I:If tiII'e eamph?
i {.1 .2" d. {2} What is the median UHFI'm sample?
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ﬂ. [4}Crﬂ'nl1ufe RE. 1113 wariqngg [.53). '1 '_*  '1 I! _:" _ [)1 SI:.. and the etandaq'd deﬁet‘mn {a}. ' i.“ it; t5) Tel“; rta/ rr'W if“ 1T} {15 points} Consider the teHewing hypothetical study: .I'mdlelegtets have recently developer! a rehabilitation
program for hearingimpaired patients in a pangram for senior citizens. It sample of the 30 residents et a
iii particular senlor citizens home was recruited; haFf of the residents were randomly assigned to go through the
rehahiilation program. and the other hell did nol. After four weeks. the seniors were diagnosed for degree and
type ofhearitg lees. which was coded as follows: 1 = hear un‘thin normal limits, 2 = highfrequeney hearing loss 3
= mild toss, 4 = miidmmoderate lose. 5 = moderate lose. 6 = moderate4osevere loss. and i' = severeto
profound loss. {gutter secres ﬂ Er here_!} The date are as fellows: oehab:12231f4lld'4555555
mnlrul:1233455556ﬁﬁ5’ﬁ? a. {2] Which is Ihie. a true experiment or a quasiexperiment? Explain why you retese your answer. 2.. vii HAUL. fittest... Elﬁn: '. _IF'I'LL..I'.+ Elite Lust; i r1  he ”errant:
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{{LLE‘agﬁjLn L ' ." .'4I' '._ f+ r‘" e. [2} What scale at measurement is the independent {or qusl—tndEpendent} variants measured on? _
nﬁwumxk r“! “ff—“'1' I1 {2} Wlta1 is the dependent Iu‘arlehle in this study, and how is it measured? {ix—L’éﬁkHi. [UN—i 'i‘ﬁHI "3b" I'LLext'ar mitt7h" a. [El What scale of measurement hWemtent veriehte measured on? Brieﬂy exptale your answer.
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 Spring '08
 McDonald
 Psychology

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