1. Unit 3 Review

2. Topics we covered: Histograms Quantitative data Intervals
Easier to see shape
Dot plots
Each dot represents a piece of data
Box plots
Find outliers

3. Topics we covered Skewed Symmetric IQR= Q3 – Q1 Median
Mean < Median: Left skewed
Mean > Median: Right skewed
Mean = Median: Symmetric
Symmetric
Mean
Standard deviation: Average distance from the mean

4. What do you think?
Suppose each person in the dinner (not Bill Gates) each got a $10,000 raise, what would happen to the mean….(Think about how we find the mean)

5. What do you think?
What would happen to the mean if someone like Bill Gates walked into the dinner?

6. Give Examples Mean is greater than the median
Median is great than the mean
Mean=Median

7. Center/Spread/Position
Standard Deviation: Spread
First Quartile: Position
Mean: Center
Min: Position
Max: Position
Range: Spread
Median: Center/Position
IQR: Spread

9. Give Examples
Categorical: Zip code, favorite, brand of car, area code, fast food
Quantitative: Siblings, age, height, GPA, weight, shoe size (Can you find the mean)

10. Make sure
You can read and interpret histograms

11. Make sure
You can read and interpret box plots

12. What do all the graphs have in common?
What are the two that are odd man out? Why are they odd man out?

13. Measures of Center
Question 1

14. Measures of Center
Question 2

15. Measures of Center
Question 3

16. Measures of Center
Question 5

17. Measures of Center
Question 6

18. Measures of Center
Question 7

19. Measures of Center
Question 8

20. Measures of Center
Question 9

21. Measures of Center
Question 10

22. Measures of Center
Question 11

23. Measures of Center
Question 12