1. Collecting,
Presenting,
and
Interpreting Data

2. Content areas The process of collecting quantitative data
Tabulation of data
Representation of data
Pictographs
Pie charts
Bar graphs
Line graph
Interpretation of data
Deception of visual displays of data

3. Creating Graphs

4. Where Does the Data/ Information Come From?
A question is asked.
What kind of ice cream does
everyone like in our class?

5. How Is the Information Gathered?
A survey is made.
Data is collected
Data is tabulated

6. How Is the Information Gathered?
Tabulation:
Chocolate
Vanilla
111
Strawberry
1111
Mint & Chip
Rocky Road 11
Bubble Gum 1

7. How Is the Information Presented?
A bar graph is made.

8. How Is the Information Presented?
A bar graph is made.

9. An Example

10. Making a Graph The Graph: Sweets sold on a Monday Find the data
Make a graph

11. The Graph It is easy to answer this question from a graph.
There is only one set of data on this graph.
What is the most popular sweet bought on Mondays?
Mars

12. Choosing Graphs There are 2 sets of data on this graph.
Is it easy to answer this question?
What is the most popular sweet bought at the weekend?
Try a different graph

13. Choosing Graphs There are 2 sets of data on this graph.
Is it easy to answer this question?
What is the most popular sweet bought at the weekend?
Mars

14. Pie Chart

15. How Is the Information Presented?
A pie chart is made.

16. How Is the Information Presented?
A pie chart is made.

17. How Is the Information Presented?
A line graph is made.

18. How Is the Information Presented?
A pictograph is made.
Chocolate
Vanilla
Strawberry
Mint & Chip
Rocky Road
Bubble Gum

19. Making Pictograph Red 50 White 35 Green 15 Silver 20 Blue 45 Yellow 10
This table shows the colour of cars in a car park.
Make a pictogram.
Red 50
White 35
Green 15
Silver 20
Blue 45
Yellow 10
Look at the numbers.
Choose the best unit.
1 picture = cars 10

20. The colour of cars Red 50 White 35 Green 15 Silver 20 Blue 45 Yellow
Key:
1 picture = cars 10
The colour of cars
Red 50
White 35
Green 15
Silver 20
Blue 45
Yellow 10
Red
White
Green
Silver
Blue
50 ÷ 10 = 5
Yellow

21. The colour of cars Red 50 White 35 Green 15 Silver 20 Blue 45 Yellow
Key:
1 picture = cars 10
The colour of cars
Red 50
White 35
Green 15
Silver 20
Blue 45
Yellow 10
Red
White
Green
Silver
Blue
35 ÷ 10 = 3½
Yellow

22. The colour of cars Red 50 White 35 Green 15 Silver 20 Blue 45 Yellow
Key:
1 picture = cars 10
The colour of cars
Red 50
White 35
Green 15
Silver 20
Blue 45
Yellow 10
Red
White
Green
Silver
Blue
15 ÷ 10 = 1½
Yellow

23. The colour of cars Red 50 White 35 Green 15 Silver 20 Blue 45 Yellow
Key:
1 picture = cars 10
The colour of cars
Red 50
White 35
Green 15
Silver 20
Blue 45
Yellow 10
Red
White
Green
Silver
Blue
20 ÷ 10 = 2
Yellow

24. The colour of cars Red 50 White 35 Green 15 Silver 20 Blue 45 Yellow
Key:
1 picture = cars 10
The colour of cars
Red 50
White 35
Green 15
Silver 20
Blue 45
Yellow 10
Red
White
Green
Silver
Blue
45 ÷ 10 = 4½
Yellow

25. The colour of cars Red 50 White 35 Green 15 Silver 20 Blue 45 Yellow
Key:
1 picture = cars 10
The colour of cars
Red 50
White 35
Green 15
Silver 20
Blue 45
Yellow 10
Red
White
Green
Silver
Blue
10 ÷ 10 = 1
Yellow

26. What is the least popular car colour in the car park?
Key:
1 picture = cars 10
The colour of cars
Red
What is the least popular car colour in the car park?
White
Green
Silver
Blue
Yellow

27. Tutorial Carry out a survey from two classes Collect the data
Tabulate your data
Present your data in graphical forms
Justify your reason for choosing this particular graphical form.
Present your table & graphs to your class
Choose a suitable, relevant & interesting set of data.

28. Areas of survey State of origin No of siblings Hobbies
Favorite TV channel
Shoe size
Genre of music
Etc…