1. Num 18-Jan-16Created by Mr. Lafferty Maths Dept. Graphs & Tables www.mathsrevision.com Interpreting Graphs. Stem and Leaf Diagram Interpreting Tables Scattergraphs

2. Num 18-Jan-16Created by Mr.Lafferty Maths Dept Starter Questions Starter Questions www.mathsrevision.com

3. Num 18-Jan-16Created by Mr. Lafferty Maths Dept. www.mathsrevision.com Learning Intention Success Criteria 2.Solve problems involving graphs. 1.To explain how to interpret various graphs. 1.Understand key information on various graphs. Interpreting Graphs

4. Num Interpreting Graphs www.mathsrevision.com What does 1 computer represent You have 1 minute to come up with a question

5. 11 12 60

6. 2 11 71

7. Num Nat 4 Interpreting Graphs 18-Jan-16Created by Mr.Lafferty Maths Dept www.mathsrevision.com

8. 14 000 2002 20000

9. 18-Jan-16Created by Mr. Lafferty9 The pie chart shows the results of a class survey into favourite restaurant food. Chinese French Indian Italian Pie Charts ItalianFrench Write down the fraction of the class that choose ChineseIndian

10. Num 18-Jan-16Created by Mr.Lafferty Maths Dept Pie Charts www.mathsrevision.com 50 people were asked what was there favourite holiday How many chose America Spain

11. 18-Jan-16 Total300 Rugby Football Cricket Ice Hockey 75 90 45 60 Favourite Sport Squash 30 90 o 108 o 54 o 72 o 36 o 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. Rugby Football Cricket Ice Hockey Squash

12. Num 18-Jan-16Created by Mr. Lafferty Maths Dept. Now try Lifeskills Ex 1 Ch11 (page 89) www.mathsrevision.com Interpreting Graphs

13. Num 18-Jan-16Created by Mr.Lafferty Maths Dept Starter Questions Starter Questions www.mathsrevision.com

14. Num 18-Jan-16Created by Mr. Lafferty Maths Dept. www.mathsrevision.com Learning Intention Success Criteria 2.Solve problems involving scattergraphs and codes. 1.To explain how to interpret a scattergraph and codes. 1.Understand how to interpret a scattergraph and codes. Scattergraphs

15. Num 18-Jan-16Created by Mr. Lafferty Maths Dept. www.mathsrevision.com Scattergraphs Sam Jim Tim Gary Joe Dave Bob This scattergraph shows the heights and weights of a sevens football team Write down the height and weight of each player.

16. (b)Estimate height if weight is 30kgs Height and Weight Data 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

17. Num 18-Jan-16Created by Mr. Lafferty Maths Dept. Now try Lifeskills Ex 2 Ch11 (page 92) www.mathsrevision.com Interpreting Graphs

18. Num 18-Jan-16Created by Mr. Lafferty Maths Dept. Starter Questions Starter Questions www.mathsrevision.com 10cm 2cm

19. Num 18-Jan-16Created by Mr. Lafferty Maths Dept. www.mathsrevision.com Learning Intention Success Criteria 2.Solve problems involving stem leaf diagrams. 1.To explain how to interpret a stem leaf diagrams. 1.Understand how to interpret a stem leaf diagram. Stem Leaf Diagrams

20. Num 18-Jan-16Created by Mr. Lafferty Maths Dept. www.mathsrevision.com Stem 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 2468 3013 4445679 50349 61456 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.

21. Num 18-Jan-16Created by Mr. Lafferty Maths Dept. www.mathsrevision.com Stem Leaf Graphs Back to Back Stem – Leaf Graphs 14026 1534 16016 1716 18144 Rugby Team 2 Heights 14 | 1 represents 141cm 78 21 76 4 508 31346 70 n = 15 Rugby Team 1 Heights 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.

22. Num 18-Jan-16Created by Mr. Lafferty Maths Dept. Now try Lifeskills Ex 3 Ch11 (page 93) www.mathsrevision.com Interpreting Graphs

23. Num 18-Jan-16Created by Mr. Lafferty Maths Dept. Starter Questions Starter Questions www.mathsrevision.com

24. Num 18-Jan-16Created by Mr. Lafferty Maths Dept. www.mathsrevision.com Learning Intention Success Criteria Constructing Graphs 1. We are learning to interpret tables. 1.Be able to calculate the best deal from a table of information.

25. 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 C Bank D Bank A

26. Alessio is looking for a mobile phone contract which will give him 165 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 her 195 minutes of calls, 350 texts, and 850 Mb of internet use. Which company’s plan would be best for her? Company C

27. Num 18-Jan-16Compiled by Mr. Lafferty Maths Dept. St. Andrew’s Secondary Ready Reckoner Making calculations easier ! Filled Rolls Price150p 290p 4£1.70 5£2.00 10£4.00 20£9.00 50£18.00 How much for (a)6 rolls (b)14 rolls (c)65 rolls £2.00 + 50p = £2.50 £4.00 + £1.70 = £5.70 £18 + £4 + £2 = £24

28. Num 18-Jan-16Created by Mr. Lafferty Maths Dept. Now try Lifeskills Ex 4 Ch11 (page 94) www.mathsrevision.com Interpreting Graphs Have you updated your Learning Log ?