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UCF QMB 3200 Test 1 Exam With 100% Correct Answers 2024
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UCF QMB 3200 Test 1 Exam With 100% Correct Answers
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UCF QMB 3200 Test 1 Exam With 100%Correct Answers
Whatiisitheiziscoreiformula?i-iCorrectiAnswer-(theiobservationi-
imean)i/istandardideviation
Whatidoesiaiziscoreitellius?i-iCorrectiAnswer-
howimanyistandardideviationsiaivalueiofifromitheimean
Howidoiyouifinditheirange?i-iCorrectiAnswer-
biggestivalueiminusismallestivalue
Whatiisitheiformulaiusediiniexcelitoifinditheirange?i-iCorrectiAnswer-
=max(array)i-imini(array)
Ifiaidataisetihasianioddinumberiofiobservations,itheimedian
a.iCannotibeidetermined
b.iisitheivalueiofitheimiddleiitemiwhenialliitemsiareiarrangediiniascendin
giorder
c.iisitheiaverageivalueiofitheitwoimiddleiitemsiwhenialliitemsiareiarrange
diiniascendingiorder.
,d.imustibeiequalitoitheimeani-iCorrectiAnswer-
b.iisitheivalueiofitheimiddleiitemiwhenialliitemsiareiarrangediiniascendin
giorder
Whichiofitheifollowingirepresentsitheidataipointithatioccursimostifrequ
entlyiiniaisetiofiobservations?
a.iMeani
b.iModei
c.iAlliofitheseichoicesiareicorrect
d.iMediani-iCorrectiAnswer-b.iMode
Theimedianiofiaidataisetiisirepresentedibyithe:
a.i50thipercentilei
b.i75thipercentilei
c.i100thipercentile
d.i25thipercentilei-iCorrectiAnswer-a.i50thipercentile
Whichiofitheifollowingiisiaipossibleireasoniforianioutlieriiniaidataiset?
a.iAimistakeiwasimadeiwhileitakingiaimeasurementiorienteringiitiintoith
eicomputer
, b.iTheiindividualiiniquestionibelongsitoiaidifferentigroupithanitheibulkiofi
individualsimeasuredi
c.iTheioutlieriisiailegitimateidataivalueiandirepresentsinaturalivariabilityi
foritheigroupiandivariablesimeasured
d.iAlliofitheseichoicesiareipossibleireasonsiforianioutlieri-
iCorrectiAnswer-d.iAlliofitheseichoicesiareipossibleireasonsiforianioutlier
Theifollowingiisitheifrequencyidistributioniforitheiagesiofiaisampleiofisen
ioricitizensiwhoiattendiailocalibingoinight.iWhatiisitheistandardideviatio
niforithisidataiset?
Agei/iFrequency
60-61i/i15
65-69i/i8
70-74i/i11
75-79i/i6
Total:i40
a.i47.8i
b.i4.19i
c.i17.54i
d.i68i-iCorrectiAnswer-b.i4.19
Aitableioriruleithatiassignsiprobabilitiesitoitheipossibleivaluesiofiaidiscret
eirandomivariableiXiisicalledithe:
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