Graphs & Tables

1. Graphs & Tables Composite Graphs. Pie-Charts Scattergraphs www.mathsrevision.com Interpreting Tables Created by Mr. Lafferty Maths Dept.

2. Starter Questions www.mathsrevision.com Created by Mr.Lafferty Maths Dept

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

4. Come up with a question for the graph

5. Come up with a question for the graph

6. 14 000 2002 20000

7. 14 15 16 17 18 1 0 0 3 1 4 2 6 1 4 6 4 6 Stem Leaf Graphs Back to Back Stem – Leaf Graphs Rugby Team 1 Heights Rugby Team 2 Heights A back to back stem-leaf helps us to compare two sets of data. 4 2 1 7 8 7 6 8 5 0 Write down a question that can be answered easily from the graph. 6 4 3 3 1 www.mathsrevision.com 7 0 n = 15 n = 15 14 | 1 represents 141cm Created by Mr. Lafferty Maths Dept.

8. Pocket money 5 6 7 6 8 8 9 0 1 2 2 3 6 7 9 2 2 4 n = 15 6 / 2 means £6.20 A group of students were asked how much pocket money they get. The results were. £6.60 £6.90 £6.20 £5.80 £7.40 £5.60 £6.70 £7.20 £6.10 £6.20 £5.90 £6.00 £7.20 £5.80 £6.30 Draw a Stem and Leaf diagram to show this Note this gives us the same diagram as the previous example. This shows the importance of the title and key.

9. Interpreting Graphs Now try N5 Lifeskills Ex 1 Ch9 (page 85) www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

10. Starter Questions Construct your own Percentage Question www.mathsrevision.com Created by Mr.Lafferty Maths Dept

11. Pie Charts Constructing Pie Charts Learning Intention Success Criteria • Be able to interpret • a Pie-Chart. • We are learning to interpret and construct • Pie-Charts. • Be able to construct • a Pie-Chart. www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

12. Chinese Indian Italian French Pie Charts The pie chart shows the results of a class survey into favourite restaurant food. Write down the fraction of the class that choose Indian Chinese Italian French Created by Mr. Lafferty

13. Pie Charts 50 people were asked what was there favourite holiday Spain How many chose www.mathsrevision.com America Created by Mr.Lafferty Maths Dept

14. 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. Football Rugby Total 300 90o 108o 36o 54o 72o Squash Cricket Ice Hockey Favourite Sport Rugby 75 Football 90 Cricket 45 Ice Hockey 60 Squash 30

15. Drawing Pie Charts Musical Instrument In a survey, people were asked to indicate which one of five musical instruments they played. The information is given in the table. Display the information in a pie chart. Guitar 35 Violin 10 Recorder 15 Drum 5 Keyboard 25 Total

16. Drawing Pie Charts Musical Instrument In a survey, people were asked to indicate which one of five musical instruments they played. The information is given in the table. Display the information in a pie chart. Guitar 35 Violin 10 Recorder 15 Drum 5 Keyboard 25 Total 90

17. Drawing Pie Charts Musical Instrument In a survey, people were asked to indicate which one of five musical instruments they played. The information is given in the table. Display the information in a pie chart. Guitar 35 Violin 10 Recorder 15 Drum 5 Keyboard 25 Total 90 Guitar

18. Drawing Pie Charts Musical Instrument In a survey, people were asked to indicate which one of five musical instruments they played. The information is given in the table. Display the information in a pie chart. Guitar 35 Violin 10 Recorder 15 Drum 5 Keyboard 25 Guitar Total 90

19. Drawing Pie Charts Musical Instrument In a survey, people were asked to indicate which one of five musical instruments they played. The information is given in the table. Display the information in a pie chart. Guitar 35 Violin 10 Recorder 15 Drum 5 Keyboard 25 Guitar Total 90 Violin

20. Drawing Pie Charts Musical Instrument In a survey, people were asked to indicate which one of five musical instruments they played. The information is given in the table. Display the information in a pie chart. Guitar 35 Violin 10 Recorder 15 Drum 5 Keyboard 25 Total 90 Violin Guitar

21. Drawing Pie Charts Musical Instrument In a survey, people were asked to indicate which one of five musical instruments they played. The information is given in the table. Display the information in a pie chart. Guitar 35 Violin 10 Recorder 15 Drum 5 Keyboard 25 Total 90 Recorder Violin Guitar

22. Drawing Pie Charts Musical Instrument In a survey, people were asked to indicate which one of five musical instruments they played. The information is given in the table. Display the information in a pie chart. Guitar 35 Violin 10 Recorder 15 Drum 5 Keyboard 25 Recorder Violin Guitar Total 90

23. Drawing Pie Charts Musical Instrument In a survey, people were asked to indicate which one of five musical instruments they played. The information is given in the table. Display the information in a pie chart. Guitar 35 Violin 10 Recorder 15 Drum 5 Keyboard 25 Recorder Violin Guitar Total 90 Keyboard Drum

24. Drawing Pie Charts Musical Instrument In a survey, people were asked to indicate which one of five musical instruments they played. The information is given in the table. Display the information in a pie chart. Guitar 35 Violin 10 Recorder 15 Drum 5 Keyboard 25 140o 40o 60o 100o 20o Total 90 Guitar Violin Recorder Keyboard Drum

25. Interpreting Graphs Now try N5 Lifeskills Ex 2 Ch9 (page 89) www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

26. Starter Questions www.mathsrevision.com Created by Mr.Lafferty Maths Dept

27. Scattergraphs Learning Intention Success Criteria • We are learning to interpret and construct a scattergraph. • 1. Be able to interpret a scattergraph. • 2. Be able to construct a scattergraph. www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

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

29. Height and Weight Data was collected on pupils weight and height. Data is plotted below. (a) Is there connection between height and weight. As weight increases height increases h 200 • Estimate height if weight is 30kgs 180 160 h = 90 cm 140 120 Height (cms) (c) Estimate weight if height is 130cm. 100 80 w = 40kgs 60 40 20 w 0 10 20 30 40 50 60 70 90 100 80 Weight (Kgs)

30. Draw in the best fit line Price (£1000) Age 1 9 1 8 2 8 3 7 3 6 3 5 4 5 4 4 5 2 Scattergraphs Construction of Scattergraph Is there a correlation? If yes, what kind? Strong negative correlation www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

31. Scattergraph Now try N5 Lifeskills Ex 3 Ch9 (page 91) www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

32. Starter Questions 2cm www.mathsrevision.com 10cm Created by Mr. Lafferty Maths Dept.

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

34. Interpreting Graphs Now try Lifeskills Ex 3 Ch11 (page 93) www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

35. Starter Questions www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

36. Constructing Graphs Learning Intention Success Criteria • Be able to interpret tables. • 1. We are learning to interpret tables. www.mathsrevision.com Created by Mr. Lafferty Maths Dept.

42. Have you updated your Learning Log ? Interpreting Graphs Now try N5 Lifeskills Ex 4 Ch9 (page 93) www.mathsrevision.com Created by Mr. Lafferty Maths Dept.