1. Lesson 1-7 Pages 40-44 Scatter Plots

2. What you will learn! 1. How to construct scatter plots. 2. How to interpret scatter plots.

3. Scatter plot

4. What you really need to know! A scatter plot is a graph that shows the relationship between two sets of data. In a scatter plot two sets of data are graphed as ordered pairs on a coordinate system. A scatter plot may show a pattern or relationship of the data. The relation may be positive or negative, or there may be no relationship.

6. Example 1: The table shows the average cost of a loaf of bread from 1920 – 2000. Make a scatter plot of the data. Year19201930194019501960 Cents12981420 Year1970198019902000Cents24527299

7. 0 10 20 30 40 60 50 70 80 90 0 19201920 19301930 19401940 19501950 19601960 19701970 19801980 19901990 20002000 Year CentsYear19201930194019501960Cents12981420 Year1970198019902000Cents24527299

8. Example 2: Determine whether a scatter plot of the data for the following might show a positive, negative, or no relationship. Explain you answer.

9. Height of basketball player and number of rebounds. 2 4 6 8 10 6668707274 Rebounds Height (in) As the height increases, the rebounds increase. Positive relationship.

10. Shoe size and math test scores. 60 70 80 90 100 4681012 Test Scores Shoe Size No Relationship!

11. Example 3: The table shows temperatures in degrees Celsius and the corresponding temperatures in Fahrenheit. Make a scatter plot of the data. °F32415059687786 °C051015202530

12. 0 30 40 50 60 70 80 90 510152025303540 Fahrenheit Celsius°F32415059687786°C051015202530

13. Does the scatter plot show a relationship between °C and °F? Yes. A positive relationship. Predict the Fahrenheit temperature for 35°C.

14. 0 30 40 50 60 70 80 90 510152025303540 Fahrenheit Celsius°F32415059687786°C051015202530 95°F

15. Page 42 Guided Practice #’s 3-7 Link to Pre-Made Lesson

18. Pages 40-42 with someone at home and study examples! Read:

19. Homework: Pages 42-44 #’s 8-19 all #’s 23-37 Lesson Check 1-CH1

25. Page 726 Lesson 1-7

26. Lesson Check 1-CH1

27. Study Guide and Review Pages 47-50 #’s 1-36 (Odd answers in back of book)

36. Prepare for Test! Page 51 #’s 1-25 Lesson Check 1-CH1

40. Prepare for Test! Pages 52-53 #’s 1-16