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WPC 300 Exam 2 Questions and Answers
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WPC 300 Exam 2 Questions and Answers
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WPC 300 Exam 2 Questions andAnswers
The ii______ iiis iithe iiobservation iithat iioccurs iimost iifrequently. ii- iiAnswers ii-mode
Which iiof iithe iifollowing iiis iian iiexample iiof iia iimeasure iiof iidispersion? ii- iiAnswers ii-
variance
For iia iinormal iidistribution iimean iiis ii____ iito iimedian. ii- iiAnswers ii-equal
Which iiof iithe iifollowing iidescribes iia iipositively iiskewed iihistogram? ii- iiAnswers ii-a
iihistogram iithat iitails iioff iitowards iithe iiright
According iito iistatistical iinotation, iiwhat iidoes ii∑ iistand iifor? ii- iiAnswers ii-to iiact iias iia
iisummation iioperator
Standard iideviation iiof iia iinormal iidata iidistribution iiis iia ii_____. ii- iiAnswers ii-measure
iiof iidata iidispersion
When iitwo iivariable iiare iihighly iipositively iicorrelated, iithe iicorrelation iicoefficient iiwill iibe
ii_____. ii- iiAnswers ii-close iito ii1
Which iiof iithe iifollowing iiis iitrue iifor iia iimedian? ii- iiAnswers ii-For iian iieven iinumber iiof
iiobservations, iithe iimedian iiis iithe iimean iiof iithe iitwo iimiddle iinumbers.
The iidifference iibetween iithe iifirst iiand iithird iiquartiles iiis iireferred iito iias iithe ii____. ii-
iiAnswers ii-interquartile iirange
Which iiof iithe iifollowing iiis iian iiexample iifor iia iisample? ii- iiAnswers ii-The iinumber iiof iiIT
iiemployees iiout iiof iiall iiemployees iiworking iiin iian iioffice iiof iiGoogle.
You iiare iicollecting iidata iivia iian iionline iisurvey iito iiimprove iieducation iistandard iiat
iiASU. iiWhich iiof iithe iifollowing iimethods iiwill iinot iiresult iiin iidata iicollection iibias? ii-
iiAnswers ii-Anonymously iidata iicollection iiby iihiding iiASU iibrand iiin iithe iisurvey
iiquestion.
Which iiof iithe iifollowing iiproposition iidescribes iian iiexisting iitheory iior iibelief? ii-
iiAnswers ii-Null iihypothesis
Which iiof iithe iifollowing iiis iia iiType-I iierror? ii- iiAnswers ii-The iinull iihypothesis iiis
iiactually iitrue, iibut iithe iihypothesis iitest iiincorrectly iirejects iiit.
, What iiis iithe iiconfidence iiinterval iiwhen iithe iilevel iiof iisignificance iiis ii0.07? ii- iiAnswers ii-
0.930
The iicentral iilimit iitheorem iistates iithat iiif iithe iipopulation iiis iinormally iidistributed, iithen
iithe ii- iiAnswers ii-sampling iidistribution iiof iithe iimean iiwill iialso iibe iinormal iifor iiany
iisample iisize
The iiWPC iiSports iiCompany iihas iinoted iithat iithe iisize iiof iiindividual ii"customer iiorder"
iiis iinormally iidistributed iiwith iia iimean iiof ii$100 iiand iistandard iideviation iiof ii$12. iiIf iia
iisoccer iiteam iiof ii16 iiplayers iiwere iito iimake iithe iinext iibatch iiof iiorders, iiwhat iiwould iibe
iithe iistandard iierror iiof iithe iimean? ii- iiAnswers ii-3 ii(12/sqrt(16)=12/4=3)
In iiorder iito iireject iithe iinull iihypothesis, iithe iip-value iimust iibe iiless iithan iithe ii- iiAnswers
ii-Alpha
Which iiof iithe iifollowing iiis iia iidifference iibetween iithe iit-distribution iiand iithe iistandard
iinormal ii(z) iidistribution? ii- iiAnswers ii-The iit-distribution iihas iia iilarger iivariance iithan
iithe iistandard iinormal iidistribution
Which iiof iithe iifollowing iiis iia iicontinuous iirandom iivariable? ii- iiAnswers ii-The iitime iito
iicomplete iia iispecific iitask
When iisample iisize iiincreases ii- iiAnswers ii-confidence iiinterval iidecreases
Which iiof iithe iifollowing iistatement iiis iitrue iibased iion iithe iifollowing iiregression
iiequation?
IQ ii= ii4.0 ii+ iiReading iiLabel ii* ii5.6 ii- iiAnswers ii-A iiunit iipoint iichange iiin iireading iilabel
iiwill iiincrease iiIQ iiby ii5.6 iipoint
Which iiof iithe iifollowing iiis iitrue iiabout iimulti-collinearity? ii- iiAnswers ii-It iiis iimeasured
iiusing iia iimeasure iicalled iivariance iiinflation iifactor ii(VIF)
The iivalue iiof iiR-Squared iialways iifalls iibetween ii____ iiand ii____, iiinclusive. ii- iiAnswers
ii-0 iiand1
The iicorrelation iicoefficient iibetween iithe iiage iiof iia iivehicle iiand iithe iimoney iispent iito
iirepair iiit iiis ii0.9. iiWhich iiof iithe iifollowing iistatement iiis iitrue? ii- iiAnswers ii-81% iiof iithe
iivariation iiin iithe iimoney iispent iion iirepairs iiis iiexplained iiby iithe iiage iiof iithe iivehicle
A iimarket iianalyst iiis iideveloping iia iiregression iimodel iito iipredict iimonthly iihousehold
iiexpenditures iion iigroceries iias iia iifunction iiof iifamily iisize, iihousehold iiincome, iiand
iihousehold iineighborhood ii(urban, iisuburban, iiand iirural). iiThe ii"neighborhood" iivariable
iiin iithis iimodel iiis ii________. ii- iiAnswers ii-an iiindependent iivariable
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