1. Mean

2. How do you find the mean???? Add all the numbers Divide by how many numbers you have Did you know…… Another name for mean is AVERAGE ÷ ÷

3. Example Find the mean:

4. Example Cesario earned 75, 88, 92, 94, and 71 on the first 5 assignments. What was his score on the sixth assignment if the mean of the data was 85?

5. FIND THE MEAN FOR THE DATA SET 99, 103, 140, 153, 109, 92, 125, 110, 140. 19 1

6. 7.50 The cost of ten different portable MP3 players is shown in the table. What is the mean cost? 2

7. FIND THE MEAN OF {15, 7, 9, 25, 4}. 93 3

8. 31 Skylar wants to find the average of her friend's weekly allowances. Use the table and find the mean weekly allowance. 4

9. JAMIE HAS SCORES OF 62, 75, AND 90 ON THREE OF HER HISTORY EXAMS. WHAT DOES SHE NEED TO GET ON HER FOURTH EXAM IN ORDER TO HAVE A MEAN OF 80? 119 5

10. THE TABLE SHOWS THE HEIGHT OF SIX DIFFERENT ROLLER COASTERS AT AN AMUSEMENT PARK. FIND THE MEAN HEIGHT. 12 6

11. 24 The cost of the same quantity of gasoline at nine different gas stations is shown below. What is the mean cost of this amount of gas? Cost of Gas: $17, $18, $22, $15, $17, $16, $25, $21, and $20 7

12. 142 The number of points a basketball team scored in eight different games is listed in the table shown. What is the mean score of all the games? 8

13. Maxwell sold 43 magazines at his mom’s work, 32 at his dad’s work, 18 around his neighborhood, and 3 at home. What is the mean of the magazines he sold? 9 90

14. 72 10 Adil races motorcycles for fun. So far, his lap times, in seconds, are 32, 35, 33, and 32. What time must Adil get on his final lap for his average lap time to be 32.6?