1. Review Activity for Statistics Part I Test Thursday, March 26 th

2. What are the 3 measures of center? (HINT: These are statistics that should give us a number around the center of the data set)

3. What are the 3 measures of variation or spread? (HINT: These are statistics that describe how far spread out or how close together our numbers are)

4. Which of the following are statistical questions? (HINT: Variety of answers) 1)What grade did Josh get on his last test? 2)How tall is Mount Rushmore? 3)What are the ages of the 6 th grade teachers at HTMS? 4)What are the favorite colors of Mr. Auld’s 7 th period class? 5)How old is Mr. Auld? 6)What are the test scores for Mr. Auld’s 1 st period class? 7)What foods have been sold in the cafeteria this year?

5. Jake’s Test Scores: 92, 95, 97, 99, 95, 27, 89, 96 What would be the best measure of center to describe Jake’s test scores? (HINT: Are there any outliers???)

6. Number of Cookies sold each day of the week in the Cafeteria: 35, 39, 32, 30, 36 What would be the best measure of center to describe cookie sales? (HINT: Are there any outliers??)

7. Number of Miles Ran by Mr. Auld during March 2, 37, 5, 5, 5, 5, 5, 5, 5, 5, 5 What would be the best measure of center to describe miles ran?

8. Jake’s Test Scores: 92, 95, 97,95, 96 If Jake gets a score of 25 on his next test, which measures of center will change? Which one will change the most?

9. Number of Cookies sold each day of the week in the Cafeteria: 35, 39, 32, 30, 36 If the next day the cafeteria sold 175 cookies, which measure of center would change THE MOST??

10. Number of Miles Each Day Mr. Auld ran 3, 9, 2, 0, 3, 5, 4 Which of the following would NOT change, mean, median, mode or range, if I ran 4 miles the next day?

11. Mean Absolute Deviation Class A Test Scores: 50, 52, 78, 20 Class B Test Scores: 85, 90, 90, 95 What do these MAD’s tell you about the 2 classes?????

12. Answers Slide 2: Mean, median, mode Slide 3: IQR, range, MAD Slide 4: #3, 4, 6, 7 Slide 5: Median Slide 6: Mean Slide 7: Mode Slide 8: Mean, mode—mean the most Slide 9: Mean Slide 10: range Slide 11: Class A MAD = 15 Class B MAD = 2.5 Class A was more consistent than Class B (Scores were closer together)