Statistics Final Exam
Questions and Answers
Updated 2026
statisticsBdescribesBaBsetBofB______BthatBareBusedBforBdescribing,Borganizing,BandBint
erpretingBinformationB-BAnswerBtoolsBandBtechniques
_____BstatisticsBinvolveBcollecting,Borganizing,BandBsummarizingBdataB-
BAnswerBdescriptive
inferentialBstatisticsBinvolveB____BtheBdataB-BAnswerBinterpreting
whatBofBtheBfollowingBareBnotBaBmeasureBofBcentralBtendency?Bmedian,Bmode,Bstan
dardBdeviation,BmeanB-BAnswerBstandardBdeviation
ThisBconsistsBofBtheBmiddleBpointBofBaBsetBofBvalues:B-BAnswerBmedian
whatBisBtheBmeanBvalueBofBtheBfollowingBscores:B12,B25,B15,B27,B32,B8?B-
BAnswerB19.83
whatBareBtheBthreeBtoolsBusedBtoBassessBvariability?B-
BAnswerBrange,BstandardBdeviation,BandBvariance
whatBisBtheBmostBcommonBmeasureBofBvariability?B-BAnswerBstandardBdeviation
IfByouBsubtractBtheBsmallestBnumberBinBtheBdistributionBfromBtheBlargest,BwhatBtype
BofBvariabilityBisBbeingBcalculated?B-BAnswerBrange
howBdoByouBcalculateBvariance?B-BAnswerBs²=B∑(x₁B-Bmean)²÷n-1
, whichBofBtheBfollowingBisBnotBanBexampleBofBaBchartBorBgraph?BcumulativeBfrequenc
yBdistribution,BfrequencyBpolygon,Bvariation,BogiveB-BAnswerBvariation
aBdistributionBofBscoresBinBwhichBalmostBtheBentireBclassBscoredBveryBhighBbutBaBfe
wBstudentsBscoredBfairlyBlowBwouldBbeB____B-BAnswerBnegativelyBskewed
whatBisBtheBrangeBofBpossibleBvaluesBofBPearson'sBproduct-
momentBcorrelationBcoefficient?B-BAnswerB-1.0BtoB1.0
ifBtheBcorrelationBbetweenBvariableBisB.70,BwhatBisBtheB%BofBtheBvarianceBisBshared
Bvariance?BhowBdoByouBcommuteBit?B-BAnswerB49%B
youBsquareB.70
anotherBwordBforBpositiveBcorrelationB-BAnswerBdirectBcorrelation
theB____BisBdefinedBasBanB"educatedBquess"BthatBdescribesBtheBrelationshipBbetween
BvariablesB-BAnswerBhypothesis
inBaBstudy,BaB____BisBdrawnBfromBaB___B-BAnswerBsample,BlargerBpopulation
UnlessByouBhaveBsufficientBevidenceBotherwise,ByouBmustBassumeBthat...B-
BAnswerBtheBnullBhypothesisBisBtrue
whichBhypothesisBcanBbeBtestedBdirectlyB-BAnswerBtheBresearchBhypothesis
whatBisBaBcharacteristicBofBtheBnormalBcurve?B-
BAnswerBmean,Bmedian,BandBmodeBareBtheBsame
Questions and Answers
Updated 2026
statisticsBdescribesBaBsetBofB______BthatBareBusedBforBdescribing,Borganizing,BandBint
erpretingBinformationB-BAnswerBtoolsBandBtechniques
_____BstatisticsBinvolveBcollecting,Borganizing,BandBsummarizingBdataB-
BAnswerBdescriptive
inferentialBstatisticsBinvolveB____BtheBdataB-BAnswerBinterpreting
whatBofBtheBfollowingBareBnotBaBmeasureBofBcentralBtendency?Bmedian,Bmode,Bstan
dardBdeviation,BmeanB-BAnswerBstandardBdeviation
ThisBconsistsBofBtheBmiddleBpointBofBaBsetBofBvalues:B-BAnswerBmedian
whatBisBtheBmeanBvalueBofBtheBfollowingBscores:B12,B25,B15,B27,B32,B8?B-
BAnswerB19.83
whatBareBtheBthreeBtoolsBusedBtoBassessBvariability?B-
BAnswerBrange,BstandardBdeviation,BandBvariance
whatBisBtheBmostBcommonBmeasureBofBvariability?B-BAnswerBstandardBdeviation
IfByouBsubtractBtheBsmallestBnumberBinBtheBdistributionBfromBtheBlargest,BwhatBtype
BofBvariabilityBisBbeingBcalculated?B-BAnswerBrange
howBdoByouBcalculateBvariance?B-BAnswerBs²=B∑(x₁B-Bmean)²÷n-1
, whichBofBtheBfollowingBisBnotBanBexampleBofBaBchartBorBgraph?BcumulativeBfrequenc
yBdistribution,BfrequencyBpolygon,Bvariation,BogiveB-BAnswerBvariation
aBdistributionBofBscoresBinBwhichBalmostBtheBentireBclassBscoredBveryBhighBbutBaBfe
wBstudentsBscoredBfairlyBlowBwouldBbeB____B-BAnswerBnegativelyBskewed
whatBisBtheBrangeBofBpossibleBvaluesBofBPearson'sBproduct-
momentBcorrelationBcoefficient?B-BAnswerB-1.0BtoB1.0
ifBtheBcorrelationBbetweenBvariableBisB.70,BwhatBisBtheB%BofBtheBvarianceBisBshared
Bvariance?BhowBdoByouBcommuteBit?B-BAnswerB49%B
youBsquareB.70
anotherBwordBforBpositiveBcorrelationB-BAnswerBdirectBcorrelation
theB____BisBdefinedBasBanB"educatedBquess"BthatBdescribesBtheBrelationshipBbetween
BvariablesB-BAnswerBhypothesis
inBaBstudy,BaB____BisBdrawnBfromBaB___B-BAnswerBsample,BlargerBpopulation
UnlessByouBhaveBsufficientBevidenceBotherwise,ByouBmustBassumeBthat...B-
BAnswerBtheBnullBhypothesisBisBtrue
whichBhypothesisBcanBbeBtestedBdirectlyB-BAnswerBtheBresearchBhypothesis
whatBisBaBcharacteristicBofBtheBnormalBcurve?B-
BAnswerBmean,Bmedian,BandBmodeBareBtheBsame