histograms - corbettmaths · histograms videos 158 and 159 on question 1: the histogram shows...
TRANSCRIPT
� �
!Histograms
Videos158and159onwww.corbettmaths.com
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Question1: Thehistogramshowsinformationaboutthetimetakentotraveltoschoolby students. Completethefrequencytable.
Question2: Thehistogramshowsinformationaboutthetemperaturesinvariouslocations. Completethefrequencytable.
Question3: Thehistogramshowsinformationaboutthesalariesofworkersinacompany.
Completethefrequencytable.
Workout
© CORBETTMATHS 2016
� �
!Histograms
Videos158and159onwww.corbettmaths.com
Question4: Thehistogramshowsinformationaboutagesofthepeoplewholiveinavillage. Completethefrequencytable.
Question5: Thehistogramshowsinformationaboutdistancesstudentslivefromacollege.
(a)Howmanystudentsattendthecollege?
(b)Howmanystudentslivelessthan10kmfromthecollege?
(c)Howmanystudentslivebetween15kmand20kmfromthecollege?
(d)Estimatehowmanystudentslivemorethan25kmfromthecollege.
(e)Estimatehowmanystudentslivelessthan5kmfromthecollege.
(f)Estimatehowmanystudentslivebetween5kmand12.5kmfromthecollege.
(g)Estimatehowmanystudentslivebetween12.5kmand17.5kmfromthecollege.
(h)Estimatehowmanystudentslivebetween10kmand14kmfromthecollege.
(i)Estimatehowmanystudentslivebetween8kmand16kmfromthecollege
(j)Estimatehowmanystudentslivefurtherthan16kmfromthecollege.
© CORBETTMATHS 2016
� �
!Histograms
Videos158and159onwww.corbettmaths.com
�
Question1: AnA-levelcourseismarkedoutof400marks. Ateacherhascreatedthishistogramtorepresentthestudents’resultsinhis collegeoverthepast10years. Thetableshowsthemarksneededforeachgrade. Workoutanestimateofthenumberofstudentswhoachievedeachgrade.
Question2: ThereareroadworksinAntrim,soallthebusesthisweekwerelate. Thehistogramshowsinformationaboutallthebuses.
(a) Estimatewhatfractionofbuseswerelessthan3minuteslate.
Thebuscompanyoffersafullrefundifthebusismorethan10minuteslate.(b)Estimatewhatpercentageofpassengerswillreceiveafullrefund.Giveyouranswertotwodecimalplaces.
Apply
© CORBETTMATHS 2016
� �
!Histograms
Videos158and159onwww.corbettmaths.com
Question3: 260peoplesitadrivingtheorytest. Theirresultsareshowninthishistogram.
10%ofthepeoplescoredlessthanxmarks.
(a)Findx.
5%ofpeoplescoredmorethanymarks.
(b)Findy
70%ofpeoplescoredlessthanzmarks.
(c)Findz
Question4: Theagesoftheresidentsofavillagearerepresentedinthishistogram
(a)Howmanypeopleliveinthevillage?
(b)Calculateanestimateofthemeanage
Question5: TheheightsofsomesunZlowersarerepresentedinthehistogram.
(a) Findanestimateofthemedian
(b)Findanestimateofthelowerquartile
(c)Findanestimateoftheupperquartile
(d)Findanestimateoftheinterquartilerange
© CORBETTMATHS 2016
� �
!Histograms
Videos158and159onwww.corbettmaths.com
Question6: Thehistogramshowsthespeed,inmilesperhour,ofcarsonaroadover1hour. 24carstravelledfasterthan40mph.
(a)Howmanycarstravelledslowerthan20mph?
(b)Howmanycarstravelledbetween20mphand40mph?
(c)Estimatehowmanycarstravelledbetween15mphand35mph.
Question7: Thehistogrambelowshowstheagesofrugbyplayers. Thereare768playersthatareunder26yearsold.
Workoutanestimateofhowmanyplayersareover32.
Question8: Thehistogrambelowshowsthemonthlysalariesofemployees. Thereare216peoplewhohaveamonthlysalaryofbetween£1800and£2100.
Workoutanestimateofhowmanyemployeeshaveasalaryofbetween£2300and£2900
© CORBETTMATHS 2016