1. Tennessee SPI Objective:
Notes
SPI 0807.Inq.3
Interpret Data
Science
Tennessee SPI Objective:
Interpret and translate data into a table, graph, or diagram.
Essential Questions
1) What are the specific purposes…
2) …of a circle graph?
3) …of a line graph?
4) … of a bar graph?
I Can Statement
I can explain the purpose of tables, line graphs, circle graphs, and bar graphs.

2. Different types of charts, tables, and graphs
Data Tables
Tables are used to organize and display independent variable and dependent variable information/data.
Independent Variable
Dependent Variable

3. Different types of charts, tables, and graphs
Pie Charts (circle graphs)
…are circular charts divided into sectors (slices).
Best used for comparing parts to a whole.
The total amount should equal 100%.
Works well for comparing 6 or fewer items, but more than six items becomes difficult to view and interpret.

4. Pie Chart/Circle Graph: Example
Starts with data
in a table like this
Transfer the data into a circle graph like this
Reminder: the sum of the sectors must equal 100%
…is comparing parts to a whole, so a pie cart is best for this data.
Parts: nitrogen, oxygen, other. Whole: Earth’s Atmosphere

5. Pie Chart/Circle Graph: Example
Starts with data
in a table like this
Pie Chart/Circle Graph: Example
Reminder: the sum of the sectors must equal 100%
…is comparing parts to a whole, so a pie cart is best for this data.
Transfer the data into a circle graph like this
Parts: comedy, action, romance etc. Whole: types of movies

6. Different types of charts, tables, and graphs
Bar Graphs
are used to compare categories of items (categorical data)
…a visual display for comparing quantities in different categories  
Bar graphs help us to see relationships quickly.

7. Bar Graph: Example
Example: A survey of student's favorite after-school activities was conducted at school. This table shows the results
…is not changing over time, so a line graph is NOT appropriate.
…is not comparing parts to a whole, so a pie cart is NOT appropriate.
…is comparing categories, so a bar graph works best for this data.

8. Different types of charts, tables, and graphs
Line Graphs
…are used to display data that changes over time
Line graphs allow us to see overall trends such as an increase or decrease during a specific time period

9. Transfer the data into a line graph
SPI 0807.Inq.3:
(Interpret Data)
Notes
Line Graph: Example
Science
Starts with data
in a table like this
…is not comparing parts to a whole, so a pie cart is NOT appropriate.
Transfer the data into a line graph
…is showing change over time, so a line graph works best for this data.

10. Review Question Bar graphs are used to compare categories
Bar graphs help us to see relationships quickly.

11. Review Question Pie charts are circular charts divided into sectors.
Best used for comparing parts to a whole.
The total amount should equal 100%.

12. Line graphs are used to display data that changes over time
Review Question
Line graphs are used to display data that changes over time

13. Review Question Pie charts are circular charts divided into sectors.
Best used for comparing parts to a whole.