1. Choosing an Appropriate Display
7-7
Choosing an Appropriate Display
Course 1
Warm Up
Problem of the Day
Lesson Presentation

2. Choosing an Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Warm Up = = = =
1.5 x
x= 7
x 3.5
x= 0.15
8 x
3 4.2
x= 11.2
2 x
x= 1

3. Choosing an Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Problem of the Day
The sum of four consecutive integers is 182. What are the four numbers?
44, 45, 46, and 47

4. Choosing an Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Learn to select and use appropriate representations for displaying data.

5. Choosing an Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
There are several ways to display data. Some types of displays are more appropriate than others, depending on how the data is to be analyzed.
Use a bar graph to display and compare data.
x x x x x x
Use a line plot to show the frequency of values.
Use a stem-and-leaf plot to show how often data values occur and how they are distributed.

6. Choosing an Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Use a circle graph to show how a set of data is divided into parts.
Use a line graph to show how data change over a time period.
Use a Venn Diagram to show relationships between two or more data sets.

7. Additional Example 1A: Choosing an Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Additional Example 1A: Choosing an Appropriate Display
Butterfly Family
Number of Species
Gossamer-wing 7
Skippers 10
Swallowtails 5
Whites and sulphurs 4
The students want to create a display to show each species of butterfly as a percentage of all species in the butterfly family. Which type of graph would they use? Explain.
Circle graph; each listed species is a part of the whole population.

8. Additional Example 1B: Choosing an Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Additional Example 1B: Choosing an Appropriate Display
Butterfly Family
Number of Species
Gossamer-wing 7
Skippers 10
Swallowtails 5
Whites and sulphurs 4
The students want to create a display to show the relationship between the species of butterflies in the park. Choose the type of graph that would best represent this data.
Venn diagram; it shows butterflies cannot be two species.

9. Number of Species in the Garden
Course 1
7-7
Choosing an Appropriate Display
Check It Out: Example 1A
Rose Family
Number of Species in the Garden
English 23
Hybrid Teas 13
Standard Tree 14
Miniature 2
The students want to create a display to show the total number of roses in the garden and see which ones occurred more frequently.
Line plot; it would display the total number of roses and allow the students to see the frequency.

10. Number of Species in the Garden
Course 1
7-7
Choosing an Appropriate Display
Check It Out: Example 1B
Rose Family
Number of Species in the Garden
English 23
Hybrid Teas 13
Standard Tree 14
Miniature 2
The students want to create a display to show the number of English Roses in the garden compared to the total percentage of roses.
Circle Graph; it would display each species of roses in the garden as a percentage of the whole population.

11. Additional Example 2: Identifying the Most Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Additional Example 2: Identifying the Most Appropriate Display
The table shows the number of visitors to the butterfly park during a four month period.
Months
Visitors
May
432
June
657
July
856
August
723
Explain why each kind of display would or would not appropriately represent the data.

12. Additional Example 2A: Identifying the Most Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Additional Example 2A: Identifying the Most Appropriate Display
Months
Visitors
May
432
June
657
July
856
August
723
Circle Graph
A circle graph shows how a set of data is divided into parts.
The circle graph does not accurately display the number of visitors per month, so it is not appropriate in representing the data.

13. Additional Example 2B: Identifying the Most Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Additional Example 2B: Identifying the Most Appropriate Display
Months
Visitors
May
432
June
657
July
856
August
723
Bar Graph
A bar graph displays and compares data.
The bar graph appropriately displays and compares the data and the number of visitors during each month.

14. Additional Example 2C: Identifying the Most Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Additional Example 2C: Identifying the Most Appropriate Display
Months
Visitors
May
432
June
657
July
856
August
723
Line Plot
A line plot shows the frequency of values.
May June July Aug
X X X X
There are only four data values to display, so it does not appropriately display the frequency in which visitors visit the park.

15. Additional Example 2D: Identifying the Most Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Additional Example 2D: Identifying the Most Appropriate Display
Months
Visitors
May
432
June
657
July
856
August
723
Line Graph
A line graph shows how data changes over time.
The line graph appropriately displays and compares the data and the number of visitors during each month.

16. Choosing an Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Check It Out: Example 2
The table shows the weight of 4 animals at the Animal Sanctuary.
Animal
Weight (lbs)
Koala 17
Chimpanzee 80
Sumatran Tiger
210
Male Gorilla
420
Explain why each kind of display would or would not appropriately represent the data.

17. Choosing an Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Check It Out: Example 2A
Animal
Weight (lbs)
Koala 17
Chimpanzee 80
Sumatran Tiger
210
Large Gorilla
420
Line Graph
A line graph shows how data changes over time.
The line graph does not appropriately display and compare the different animals weight.

18. Choosing an Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Check It Out: Example 2B
Animal
Weight (lbs)
Koala 17
Chimpanzee 80
Sumatran Tiger
210
Large Gorilla
420
Stem-and-Leaf Plot
Stems Leaves
A stem-and-leaf plot shows how often data values occur and how they are distributed.
There are only 4 data values, and how often they occur and how they are distributed are not important.

19. Choosing an Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Check It Out: Example 2C
Animal
Weight (lbs)
Koala 17
Chimpanzee 80
Sumatran Tiger
210
Large Gorilla
420
Circle Graph
A circle graph shows how a set of data is divided into parts.
A circle graph appropriately shows the proportionate amount of weight compared to the total weight of all the animals.

20. Choosing an Appropriate Display
Course 1
7-7
Choosing an Appropriate Display
Check It Out: Example 2D
Animal
Weight (lbs)
Koala 17
Chimpanzee 80
Sumatran Tiger
210
Large Gorilla
420
D. Bar Graph
A bar graph displays and compares data.
The bar graph appropriately displays and compares the weight of each animal.

21. Choosing an Appropriate Display Insert Lesson Title Here
Course 1
7-7
Choosing an Appropriate Display
Insert Lesson Title Here
Lesson Quiz: Part I
For each description of the data set, tell what type of display would be most appropriate.
1. The number of points scored per game by the basketball team during the season.
2. The number of books read by each student in third period English class.
Line graph
Line plot

22. Choosing an Appropriate Display Insert Lesson Title Here
Course 1
7-7
Choosing an Appropriate Display
Insert Lesson Title Here
Lesson Quiz: Part II
3. The percentage of the variety of cakes made by a bakery.
4. The number of magazine subscriptions sold by each member of the sales staff.
Circle graph
Bar Graph