num 18-jan-16created by mr. lafferty maths dept. graphs & tables interpreting graphs. stem and...

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3 May 20233 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.

Graphs & TablesGraphs & Tablesww

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Stem and Leaf Diagram

Interpreting Tables

Scattergraphs

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3 May 20233 May 2023 Created by Mr.Lafferty Maths DeptCreated by Mr.Lafferty Maths Dept

Starter Starter QuestionsQuestions

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1. Does 56- 29 = 35 Explain your answer

2. Complete the sentence a 350 angle is called a ___________ .

3. Solve 2 +5=17x

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3 May 20233 May 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.www.

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m Learning IntentionLearning Intention Success CriteriaSuccess Criteria

2.2. Solve problems involving Solve problems involving graphs.graphs.

1. To explain how to interpret various graphs.

1.1. Understand key Understand key information on various information on various graphs.graphs.

Interpreting Graphs

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What does 1 computer represent

You have 1 minute to come up with a

question

111260

NumNat 4

Interpreting Graphs

3 May 20233 May 2023 Created by Mr.Lafferty Maths DeptCreated by Mr.Lafferty Maths Deptwww.

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14 0002002

20000

3 May 2023 Created by Mr. Lafferty 9

The pie chart shows the results of a class survey into favourite restaurant food.

Chinese

Fren

ch

Indian

Italian

Pie Charts

Italian French

Write down the fraction of the class that choose

ChineseIndian 410

210

310

110

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Pie ChartsPie Chartsww

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what was there favourite holiday

How many choseAmerica

Spain

4 of 5010=50 10 4 =20

3 of 5010=50 10 3 =15

3 May 2023

Total 300

Rugby

Football

Cricket

Ice Hockey

75

90

45

60

Favourite Sport

Squash 30

90o108o

54o 72o36o

Drawing Pie Charts

In a survey, 300 people were asked to indicate which one of five sports they liked best. Using the graph calculate the number people who liked each sport.

RugbyFootba

ll

Cricket Ice Hockey

Squash

90Rugby angle = 30 50360 7x

108Football angle = 30 00360 9x

54Cricket angle = 30 50360 4x

72Ice Hockey angle = 30 00036 6x

36Squash angle = 30 00360 3x

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Now try Lifeskills

Ex 1Ch11 (page 89)

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Starter Starter QuestionsQuestions

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1 5

1. Does 5 +2 3 = 21 Explain your answer

2. 2.5 100

3. £ 4.50

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2.2. Solve problems involving Solve problems involving scattergraphs and codes.scattergraphs and codes.

1. To explain how to interpret a scattergraph and codes.

1.1. Understand how to Understand how to interpret a scattergraph interpret a scattergraph and codes.and codes.

ScattergraphsScattergraphs

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Sam

Jim

Tim

GaryJoe

Dave

Bob

This scattergraph shows the heights and weights of a

sevens football team

Write down the height and weight of

each player.

0 10 20 30 40 50 60 70 80 90 100w

h

20406080

100120140160180200

Heig

ht (c

ms)

Weight (Kgs)

(b) Estimate height if weight is 30kgs

Height and WeightData was collected on pupils weight and height. Data is plotted below.

(a) Is there connection between height and weight.

(c) Estimate weight if height is 130cm.

h = 90 cm

w = 40kgs

As weight increases height increases

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Now try Lifeskills

Ex 2Ch11 (page 92)

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Starter QuestionsStarter Questionsww

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by 20%. I t was £460. How much is it now.

2. 5% of 480

3. Find the area and perimeter of the shape.10cm

2cm

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2.2. Solve problems involving Solve problems involving stem leaf diagrams.stem leaf diagrams.

1. To explain how to interpret a stem leaf diagrams.

1.1. Understand how to Understand how to interpret a stem leaf interpret a stem leaf diagram.diagram.

Stem Leaf Stem Leaf DiagramsDiagrams

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mStem Leaf GraphsStem Leaf Graphs

A Stem – Leaf graph is another way of displaying information :

This stem and leaf graph shows the ages of people waiting in a queue at a post office

2 4 6 83 0 1 34 4 4 5 6 7 95 0 3 4 96 1 4 5 6

stem leaves

Ages

n = 20 Key : 2 4 means 24

How many people in the queue?

How many people in their forties?20

6

You have 1 minute to come up with another question for stem leaf.

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mStem Leaf GraphsStem Leaf Graphs

Back to Back Stem – Leaf Graphs

14 0 2 615 3 416 0 1 617 1 618 1 4 4

Rugby Team 2Heights

14 | 1 represents 141cm

7 82 17 6

4

5 083 13467 0

n = 15 n = 15

Rugby Team 1Heights

A back to back stem-leaf helps us to compare two

sets of data.Write down a

question that can be answered

easily from the graph.

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Now try Lifeskills

Ex 3Ch11 (page 93)

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Starter QuestionsStarter Questionsww

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16, 10, 8, 18

52. Calculate of 3606

1 1 1 1 13. How many degrees in , , , , of a circle.2 3 4 6 10

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Constructing Constructing GraphsGraphs

1. We are learning to interpret tables.

1.1. Be able to calculate the Be able to calculate the best deal from a table of best deal from a table of information .information .

John has savings of £4500 , which bank would pay the most interest ?

Bill has savings of £1200 , which bank should he choose ?

Victor has savings of £7400 , how can he maximise his money ?

Bank CBank D

Bank A

Alessio is looking for a mobile phone contract which will give him165 minutes of calls, 450 texts, and 745 Mb of internet use. Which company’s plan would be best for him?Company B

Hannah is looking for a mobile phone contract which will give her195 minutes of calls, 350 texts, and 850 Mb of internet use. Which company’s plan would be best for her?Company C

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3 May 20233 May 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.

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Ready Ready ReckonerReckoner

Making calculations easier !Filled RollsFilled Rolls PricePrice

11 50p50p22 90p90p44 £1.70£1.7055 £2.00£2.00

1010 £4.00£4.002020 £9.00£9.005050 £18.00£18.00

How much forHow much for(a)(a) 6 rolls6 rolls

(b)(b) 14 rolls14 rolls

(c)(c) 65 rolls65 rolls

£2.00 + 50p = £2.50

£4.00 + £1.70 = £5.70

£18 + £4 + £2 = £24

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Now try Lifeskills

Ex 4Ch11 (page 94)

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mInterpreting GraphsHave you updated your

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num 18-jan-16created by mr. lafferty maths dept. graphs & tables interpreting graphs. stem and...

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