Ls15 Ucla Phelan Midterm Exam Questions With 100% Correct And Verified Answers 2025

Ls15 Ucla Phelan Midterm Exam
Questions With 100% Correct And
Verified Answers 2025
1.iScientificithinking,iwhatiisiitifor?iandibeiableitoiuseiiti-
iCORRECTiANSWERS-



scientificithinkingi-iCORRECTiANSWERS--
iempiricali(basedioniobservationsiandiexperiencesinotisolelyi

logic)
-iselficorrecting
-iobservation
-ihypothesesi
-ipredictions
-iexperiments
-iconclusionsi(modifyihypotheses,iandicontinueitheiprocess)

scientificimethodi-iCORRECTiANSWERS--iorganized
-iempirical
-imethodical
-
istructurediwayiofifindingiinformationiaboutiobservableieven

tsiininature
-iletsiusirejectihypothesesiaboutihowitheiworldiworks

stepsiofitheiscientificimethodi-iCORRECTiANSWERS-
1.imakeiobservations
2.iformulateihypothesesi-iisiititestable?irefutable?
3.imakeiaiprediction
4.iconductianiexperimenti-
icontroliallivariablesiBUTione,irandomized,idoubleiblind

5.ianalyzeiresults,idrawiaiconclusioni(ifievidenceidisprovesih
ypothesis,iconstructiainewihypothesis)
6.ireportiresults



vendarsol

,isitheiscientificimethodiflexible?i-iCORRECTiANSWERS-yes!
iitidoesn'tihaveitoibeistepibyistep



whatidoesiai"criticaliexperiment"idoi-iCORRECTiANSWERS-
putiaihypothesisitoitheitest,itheiresultsicanidecisivelyideterm
ineiwhetheriaihypothesisiisicorrect

classiexamplesiofiscientificimethodi-iCORRECTiANSWERS--
idoesiitirainimoreioniweekends?

-irealivsiartificialivanilla
-i"mazeibright"ivsi"mazeidull"irats

classiexample:idoesiitirainimoreioniweekends?i-
iCORRECTiANSWERS--

ifindiaverageiMondayiandiSaturdayirainfall;irainsi22%imorei

oniSaturdays
-
ihypothesis:iparticularimatterifromicariexhaustibuildsiupidur

ingitheiweekileadingitoicloudiformationiandithenirainionithei
weekends
-
iexperiment:icollectidataifromisomewhereiwithinoicarsi(ocea

n)
-
iresults:ithereiisiequalirainfallionieachidayiinitheiocean,iPRO

VINGithaticariexhaustiaffectsitheitrendiofimoreirainioniweek
ends

classiexample:irealivsiartificialivanillaiinichocolateichipicook
iesi-iCORRECTiANSWERS--
iPhelanibakedibatchesioficookiesiwithirealivanillaiandiwithiar

tificialivanilla
-iaskediwifeiwhichioneitastedibetter
-
iconcludedithatithereiwasinoidifferenceiinitasteibetweenitheit

ypesiofivanillaiused




vendarsol

, classiexample:iisimazeirunningigeneticiinimice?i-
iCORRECTiANSWERS--

ihavei"mazeidull"iandi"mazeibright"imice

-
iwithieachigeneration,itestiallimiceiforimazeilearningiabilityi

andibreedionlyitheitopi20%iandibottomi20%
-iobserveinewigenerations
-
iconclusion:ioveritime,itheiextremesigotimoreiandimoreiexag

geratedi
-
imazeirunningiisinotigeneticibutitheialleleiforifeariisiinimice;i

lessifeari=isolveimazeiquicker,imoreifeari=isolveimazeislower

howitoiincreaseiexperiment'sipoweri-iCORRECTiANSWERS--
irandomizeisubjects

-icontroliyouristudy
-iuseiaidouble-blindidesign

R.C.D.i-irat'sicauseidiseases

whatiisitheicost-
benefitianalysisiofihavingiaimoreicontrollediexperiment?i-
iCORRECTiANSWERS-

it'siaipoorerimodeliofitheisituationiofiinterest

2.iHowidoesiaihypothesisidifferifromiaitheoryioriprediction?i-
iCORRECTiANSWERS--

iaipredictionionlyioffersiaiguessiofiwhatiwillihappeniinitheifut

ure
-
iaitheoryiisiaiwidelyiacceptediideaithatihasiseriousievidenceib

ehindiit,ibackingiitiup;iex:itheoryiofievolution
-
iaihypothesisiisiaiproposediexplanationiforiobservediphenom

enai
-iaihypothesisimustigenerateitestableipredictions
-itheoriesiareigenerallyibroaderithanihypotheses



vendarsol