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� *TherearetemplatesforQuestion1andApplyQuestions1,2,3,4atthe endofthisexercise
Question1: Plotthefollowinginformationasscattergraphs
(a)
(b)
(c)
(d)
Question2: Whattypeofcorrelationdoeseachscattergraphshowbelow
(a) (b)
(c) (d)
Workout
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(e) (f)
Question3: DescribetherelationshipsshownineachscattergraphinQuestion2.
� Question1: Thescattergraphbelowshowsinformationaboutthenumberofhours spentrevisingforatestandthetestresultforagroupof8students.
(a) Daisyspent7hoursrevisingforthetest.WhatisDaisy’stestscore?
(b)Harry’stestscorewas30%.HowmanyhoursdidHarryspendrevising?
(c)DrawalineofbestVit.
(d)Anotherstudentspent6hoursrevisingforthetest.Findanestimateoftheirtestscore.
(e)Explainwhyitmightnotbesensibletousethescattergraphtoestimatethescoreforastudentthatspent15hoursrevising.
Apply
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Question2: Thescattergraphshowsinformationaboutthecostofrentingapartmentsand theirdistancefromLondon.
(a) Describetherelationshipshowninthescattergraph.
(b)DrawalineofbestVitonthediagram.
(c)EstimatethecostofrentinganapartmentfromLondon.
(d)Victorhas£1100tospendonrent.EstimatehowclosehecouldlivetoLondon.
(e)Explainwhyitmightnotbesensibletousethescattergraphtoestimatethepriceofrentforapropertythatis250kmfromLondon.Question3: Thestudentsinaclasssitanon-calculatorandacalculatormathspaper.
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(a) Whattypeofcorrelationdoesthescattergraphshow?
(b)DrawalineofbestVit.
(c)Philipwasabsentforthecalculatorpaper,buthescored80inthenon-calculatorpaper.UseyourlineofbestVittopredicthiscalculatorpaperscore.
(d)Neilwasabsentforthenon-calculatorpaper,buthescored60inthecalculatorpaper.UseyourlineofbestVittopredicthisnon-calculatorpaperscore.
Question4: MrHughesisaplumber. Thescattergraphshowsthecostandthelengthofhislast10jobs.
(a) DrawalineofbestVit
(b)ForonejobMrHughesneededtoreplaceanexpensivepartthatheVittedquickly.Howlongdidthatjoblast?
(c)Estimatethecostofajoblasting3.5hours.
(d)Ajobcosts£120,estimatethelengthofthejob.
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Question1(a)
Question1(b)
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Templates
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!ScatterGraphs
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Question1(c)
Question1(d)
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Apply1
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Apply3
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