PSU STAT 200 EXAM 1 QUESTIONS
WITH VERIFIED SOLUTION 2024
ZNscoreN-NcorrectNanswer-
findNtheNdifferenceNbetweenNaNvalueNinNtheNsampleNandNtheNmean,NandNdivideNitNbyNtheNstandardNdeviati
on
zN=NXN-NμN/Nσ
XNisNspecificNpointNyou'reNlookingNat,NuNisNtheNmean,NoNisNstandardNdeviation
RightNskewedN-NcorrectNanswer-MeanNgreaterNthanNmedian,NtailNpointingNtoNtheNright,NpositivelyNskewed
LeftNskewedN-NcorrectNanswer-MeanNlessNthanNmedian,NtailNpointingNtoNtheNleft,NnegativelyNskewed
SensitiveNstatisticN-NcorrectNanswer-UsesNallNobservations,NaffectedNbyNskewedness
Robust/staticNstatisticN-NcorrectNanswer-UsesNonlyNaNfewNobservations,NremainsNmainlyNtheNsame
PopulationN-NcorrectNanswer-NN-NallNobservationsNideallyNdesiredN(entireNcountry)
SampleN-NcorrectNanswer-nN-NobservationsNthatNareNactuallyNobtainedN(surveyedNnumberNofNpeople)
DescriptiveNmethodsN-NcorrectNanswer-DescribeNaNsample
InferentialNmethodsN-NcorrectNanswer-MakeNinferencesNaboutNpopulations
CensusNsurveyN-NcorrectNanswer-DataNcollectedNfromNeachNmemberNofNaNpopulation
SampleNsurveyN-NcorrectNanswer-SampleNofNaNcensus
WITH VERIFIED SOLUTION 2024
ZNscoreN-NcorrectNanswer-
findNtheNdifferenceNbetweenNaNvalueNinNtheNsampleNandNtheNmean,NandNdivideNitNbyNtheNstandardNdeviati
on
zN=NXN-NμN/Nσ
XNisNspecificNpointNyou'reNlookingNat,NuNisNtheNmean,NoNisNstandardNdeviation
RightNskewedN-NcorrectNanswer-MeanNgreaterNthanNmedian,NtailNpointingNtoNtheNright,NpositivelyNskewed
LeftNskewedN-NcorrectNanswer-MeanNlessNthanNmedian,NtailNpointingNtoNtheNleft,NnegativelyNskewed
SensitiveNstatisticN-NcorrectNanswer-UsesNallNobservations,NaffectedNbyNskewedness
Robust/staticNstatisticN-NcorrectNanswer-UsesNonlyNaNfewNobservations,NremainsNmainlyNtheNsame
PopulationN-NcorrectNanswer-NN-NallNobservationsNideallyNdesiredN(entireNcountry)
SampleN-NcorrectNanswer-nN-NobservationsNthatNareNactuallyNobtainedN(surveyedNnumberNofNpeople)
DescriptiveNmethodsN-NcorrectNanswer-DescribeNaNsample
InferentialNmethodsN-NcorrectNanswer-MakeNinferencesNaboutNpopulations
CensusNsurveyN-NcorrectNanswer-DataNcollectedNfromNeachNmemberNofNaNpopulation
SampleNsurveyN-NcorrectNanswer-SampleNofNaNcensus