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KHAN ACADEMY ANSWERS COMPUTER SCIENCE QUESTIONS WITH ACTUAL SOLUTIONS
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KHAN ACADEMY ANSWERS COMPUTER SCIENCE QUESTIONS WITH ACTUAL SOLUTIONS
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KHAN ACADEMY ANSWERSCOMPUTER SCIENCE QUESTIONS WITH
ACTUAL SOLUTIONS
An aaobstetrics aadepartment aais aastudying aafetal aaheartbeat aaand aahow aait
aacorresponds aato aaa aahealthy aabirth.
They aamake aaaudio aarecordings aaof aathe aafetal aaheartbeat aaat aavarious aastages aaof
aapregnancy. aaAlong aawith aaeach aarecording, aathey aaalso aarecord aametadata. aaThe
aametadata aaincludes aathe aagestational aaage aaof aathe aafetus aa(in aaweeks), aathe aaage
aaof aathe aamother, aathe aaheight aaof aathe aamother aaand aathe aaweight aaof aathe
aamother.
Which aaof aathese aaquestions aacan aabe aabetter aaanswered aaby aaanalyzing aathe
aaaudio aadata aainstead aaof aathe aametadata?
👁️ Note aathat aathere aaare aa2 aaanswers aato aathis aaquestion. aa- aaAnswer aaWhat aais
aathe aaaverage aaheartbeat aaof aaa aafetus?
What aais aathe aarange aain aathe aaheartbeat aaof aaa aafetus?
An aaonline aatoy aastore aakeeps aaa aadatabase aaof aaall aasales. aaFor aaeach aapurchase,
aathe aadatabase aaincludes aathe aafollowing aadetails:
The aadate aaof aathe aasale
The aatime aaof aathe aasale
The aamethod aaof aapayment aa(credit/PayPal)
The aatotal aaamount aapaid
A aalist aaof aathe aaitems aasold
The aatoy aastore aamanager aaasks aathe aadatabase aaadministrator aafor aaa aareport aaon
aavarious aasale aametrics.
Which aaof aathese aametrics aacan aanot aabe aareported aafrom aathe aasales aadatabase?
aa- aaAnswer aaThe aamost aaexpensive aaitem aasold.
Two aaneighboring aahigh aaschools aaboth aaoffer aaan aaAP aaBiology aacourse aaand
aatrack aahow aawell aathe aastudents aado aaon aathe aaexam.
The aatwo aaschools aadecide aato aacombine aatheir aadata aasets aato aasee aawhat aathey
aacan aalearn aafrom aathem aatogether.
Which aaof aathe aafollowing aacan aabe aadetermined aafrom aathe aacombined aadata aaset?
👁️ Note aathat aathere aaare aa2 aaanswers aato aathis aaquestion. aa- aaAnswer aaThe
aadistribution aaof aaAP aaexam aascores aafor aa11th aagraders
, The aatotal aanumber aaof aastudents aathat aaearned aaeither aaa aa4 aaor aa5 aaon aathe aaAP
aaexam
OpenPowerLifting aais aaan aaorganization aathat aatracks aaresults aain aathe aasport aaof
aapower aalifting aaand aamakes aathe aadata aaopenly aaavailable aain aaa aaCSV aafile.
aaEach aarow aacontains aathe aafollowing aadetails:
Name aaof aathe aacompetitor
Age aaof aathe aacompetitor
Body aaweight aa(kilograms)
Best aabench aapress aa(kilograms)
Best aadeadlift aa(kilograms)
Equipment aaused aa(multi-ply, aasingle-ply, aawraps, aastraps, aaor aaraw)
Which aaof aathe aafollowing aaquestions aacan aabe aaanswered aausing aathe aaavailable
aadata?
👁️ Note aathat aathere aamay aabe aamultiple aaanswers aato aathis aaquestion.
Choose aaall aaanswers aathat aaapply:Choose aaall aaanswers aathat aaapply: aa- aaAnswer
aaWhat aaare aathe aanames aaof aathe aaoldest aaand aayoungest aacompetitors?
What aais aathe aarelationship aabetween aabest aadeadlift aaamount aaand aathe aaequipment
aaused?
What aais aathe aaproportion aaof aacompetitors aausing aastraps aaas aatheir aaequipment?
Problem
A aa"red aalight aacamera" aais aaa aacamera aainstalled aaat aastreet aaintersections aathat
aarecords aawhenever aaa aacar aaruns aaa aared aalight.
The aacamera aarecords aatwo aaimages, aaone aaright aabefore aathe aacar aaenters aathe
aaintersection, aaand aaone aaafter aait's aaentered aathe aaintersection.
In aaaddition aato aathe aaimages, aait aarecords aametadata aaabout aathe aaincident: aathe
aadate aaand aatime, aathe aaintersection aalocation, aathe aaspeed aaof aathe aacar, aaand aathe
aaseconds aaelapsed aapast aathe aalight aaturning aared.
Which aaof aathese aaquestions aacan aabe aabetter aaanswered aaby aaanalyzing aathe
aametadata aainstead aaof aathe aaimage aadata?
👁️ Note aathat aathere aaare aa2 aaanswers aato aathis aaquestion. aa- aaAnswer aaWhat aais
aathe aaaverage aaspeed aaof aaa aacar aawhen aait aaruns aaa aared aalight?
Which aaintersections aahave aathe aagreatest aanumber aaof aared aalight aarunners?
StackOverflow aais aaa aapopular aaquestion aa& aaanswers aasite. aaEach aatime aaa aauser
aaasks aaa aanew aaquestion, aathey aainsert aaa aarow aain aaa aadatabase aatable.
Each aarow aacontains:
The aauser aaID
The aauser aadisplay aaname
The aatimestamp aaof aathe aaquestion
The aatext aaof aathe aaquestion
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