SAT Mc Graw Hill 2011

1. Draw the “average pyramid.”


2. Explain how to use the average pyramid to solve a problem involving averages.


3. Define a median.


4. Define a mode.


5. In what situations is the mean of a set of numbers the same as its median?


6. The average (arithmetic mean) of four numbers is 15. If one of the numbers is 18, what is the average of the
   remaining three numbers?


7. The average (arithmetic mean) of five different positive integers is 25. If none of the numbers is less than
   10, then what is the greatest possible value of one of these numbers?


8. Ms. Appel’s class, which has twenty students, scored an average of 90% on a test. Mr. Bandera’s class, which
   has 30 students, scored an average of 80% on the same test. What was the combined average score for the
   two classes?

338 MCGRAW-HILL’S SAT

Concept Review 2:

Mean/Median/Mode Problems