1. Module 6: Statistics & Data Lesson 3

2. Objectives  Create a frequency table and a dot plot for a given set of data  Describe the shape of the data on a dot plot using the correct terminology  Create a frequency table and a dot plot for a given set of data  Describe the shape of the data on a dot plot using the correct terminology

3. Vocab Review  Data  Statistical question  Types of data  Dot plot  Data  Statistical question  Types of data  Dot plot

4. Making Dot Plots  Number Line!!  Even intervals  Key  Title  Dots (obviously)  Number Line!!  Even intervals  Key  Title  Dots (obviously)

5. Example 1 – Make a Dot Plot

6. Number of hoursNumber of students 5 6 7 8 9 10 11 12

8. Ask  What are the least and the most hours of sleep reported in the survey of 6 th graders?  What is the most common number of hours slept?  How many hours of sleep describes the center of the data?  Think about how many hours of sleep you usually get on a school night. How does your number compare with the number of hours of sleep from the survey of 6 th graders?  What are the least and the most hours of sleep reported in the survey of 6 th graders?  What is the most common number of hours slept?  How many hours of sleep describes the center of the data?  Think about how many hours of sleep you usually get on a school night. How does your number compare with the number of hours of sleep from the survey of 6 th graders?

9. Example 2 – Make a Dot Plot

10. Number of hoursNumber of students

12. Ask  How many hours of sleep with no school the next day describe the center of the data?  What are the least and most hours slept with no school the next day reported in the survey?  Do students sleep longer when they don’t have school the next day than they do when they do have school the next day? Explain your answer using the data in both dot plots.  How many hours of sleep with no school the next day describe the center of the data?  What are the least and most hours slept with no school the next day reported in the survey?  Do students sleep longer when they don’t have school the next day than they do when they do have school the next day? Explain your answer using the data in both dot plots.

13. Compare.  Look at the two line plots.  What do you notice that is similar? Different?  What is the shape of the plot?  Look at the two line plots.  What do you notice that is similar? Different?  What is the shape of the plot?

14. Shapes of Plots – Symmetric

15. Shapes of Plots – Skewed Left

16. Shapes of Plots – Skewed Right

17. Exit Slip