abpie charts - constructing and questions

8/8/2019 ABPie Charts - Constructing and Questions

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Pie Charts

Be able to construct a pie chart

from a collection of data, using aprotractor.


2/13

Makes of car in a school car park

Make Cavalier Ford Rover Volvo

Frequency 3 2 4 1

Construct a pie chart to show this information.

A full circle is 360o

There are a total of 3+2+4+1 = 10 carsWe use 36o to represent each car

360o


3/13

Work out the missing numbers on this number spider

30

12

24

20

10

15

90

4

360

12

30

15

18

36

24

4

90


4/13



Frequency 3 2 4 1

Angle in

pie chart

We use 36o to represent each car so the

3 Cavaliers are represented by 3x36o

= 108o

Work out the angle needed for each of the other

models of car

3x36o

=108o2x36o

=72o4x36o

=144o1x36o

=36o


5/13



Angle 108o 72o 144o 36o

Mark the centre of the pie

and draw the circle.

Draw a line from the centre

to the edge

Measure the first angle

needed (108o)

Draw in the line and label

the section

108oCavalier


6/13



Angle 108o 72o 144o 36o

From this line measure the

next angle, draw the line and

label the section.

Continue in this way

Check that the last section

has the correct angle and

label it.72o

Cavalier

Ford144o

Rover

36oVolvo


7/13

Why?

Why do we use 36o to represent 1 car?

What would happen if there were 20 cars?

What about 60 cars? Or 15 cars?

If there were 20 cars in your survey, what

angle would you use to represent 4 cars?7 cars? 12 cars?


8/13

Q1 A survey of how 30 pupils got to school

Q2 How Cameroon spent his 40 birthday money

Q3 Who is your favourite Telly-Tubby survey.

Construct Pie charts questions

Method Walk Cycle Car Bus

Frequency 15 5 7 3

How Games Clothes Books Cinema

Amount 6 19 9 6

Telly-

Tubby

Tinky-

Winky

Dipsy La-La Po

Frequency 12 20 18 40


9/13

Interpreting Pie Charts

20 pupils in class 3B travel to school. From the

chart find the number of pupils who travel by

each method.

Walk =

Cycle =

Bus =

Walk

2

Cycle

2

Bus

2

920360

162!v

r

r

420360

72!v

r

r

720360

126!v

r

r


10/13

180 boys in year 5 chose their favourite sport.

From the chart find how many chose each sport.

Footba

1

u by

80

ross

ountry

0

oc ey

0

S uash


11/13

300 passengers boarded a train in London. From

the chart find how many are travelling to each

destination.

o thampton

0

oole0

ar stone

3

ran some

o rnemo th

0


12/13

150 packets of crisps were sold from a vending

machine. From the chart find the number for

each flavour. Find also the percentage for each.

heese & nion

60

rawn ocktail

36

alt & inegar

72

lain

144


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abpie charts - constructing and questions

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