1. Unit 4 - Describing Data Central Tendencies : Mean, median, mode Spread: Q1, Q3, IQR, Min, Max, Range, MAD Graphs: Box-and-Whiskers Histograms Dot Plots Correlation: positive, negative, none Line of Best Fit Residuals Pattern=Problem, No Pattern = No Problem Regressions: Linear vs. Exponential Probability Tables: Joint, Marginal, Conditional

2. 4448525660646872768084889296 1) What is the IQR of the data?

3. 4448525660646872768084889296 2) Identify the 1 st quartile, 3 rd Quartile and the Median of the data.

4. 3)Find the Mean Absolute Deviation (MAD) of the following data: 77, 48, 65, 80, 71

5. 4) How many cars get between 15 and 30 miles per gallon?

6. MathSocial Studies P.ETotal 9 th 501840108 10 th 22205092 Total723890200 5) What is the probability that a student surveyed is a freshman?

7. MathSocial Studies P.ETotal 9 th 501840108 10 th 22205092 Total723890200 6) If a student likes Math, what is the probability that they are a freshman?

8. 7) Does the situation represent a positive, negative or no correlation Number of hours studying for the SAT and your score

9. 8) Does the situation represent a positive, negative or no correlation The distance you drive and the number of stars in the sky

10. 9)Does the situation represent a positive, negative or no correlation The temperature and the length of daylight hours for the day

11. 10)Tell if the situation is causation The number of boats on Lake Allatoona and the number of cars on the street

12. 11) Tell if the situation is causation: The hours you work and the money you make

13. 12) Tell if the situation is causation: The time spent studying and the A on the test

14. 13) Which class has the greatest range?

15. 14) Which class has the largest minimum heart rate?

16. 15) Which class has the smallest lower quartile?

17. 16) Which of the following graphs has a strong negative correlation? A D C B

19. 18) Given the scatter plot, what is the best type of function to represent the data? A.Linear B.Quadratic C.Exponential D.No Correlation

20. 19) Between which of the following variables would you expect there to be a positive correlation? A.The outside temperature and the number of layers of clothing a person wears. B.The number of students at Hillgrove and the number of cats at the animal shelter C.The number of cigarettes a person smokes and the person’s life expectancy D.The number of years spent in school and salary.

21. 20) Which of the following is one of the 5 values needed to make a box-and whisker plot? A.Range B.1 st Quartile C.Mode D.Interquartile Range

23. MonthChazTyr’e January$250 February$290$340 March$270$310 April$240$300 May$260 June$270$280 July$280$270 22) Chaz and Tyr’e each get paid a bonus at the end of each month. This table shows their bonuses: Who had the greatest Median?

24. MonthChazTyr’e January$250 February$290$340 March$270$310 April$240$300 May$260 June$270$280 July$280$270 23) Chaz and Tyr’e each get paid a bonus at the end of each month. This table shows their bonuses: Who had the greatest Range?

25. 24) Which shark lived longer than any other shark?

26. 25) About how long did the Basking Shark live?

27. 26) Which Shark lived about one-third as long as the Dusky Shark?

28. 27) Tell what kind of Correlation the graph has.

29. 28) Tell what kind of Correlation the graph has.

30. 29) Tell what kind of Correlation the graph has.

31. 30) Describe the type of correlation represented in the graph below.