Monday, September 25, 2006

Measure of Centeral Tendency Pretest 2

3. Julie buys a book, a game, a puzzle, and a piece of computer software at the book fair. The computer software cost $10. Julie claims that the average price of the items she bought is $ 2.50. Can she be correct why or why not?

The average of 4 items is $ 2.50, so the maximum amount of money is $ 10.00 on all the items in order to be true. The other 3 items have to be free because she already spend the maximum amount of $ 10.00. So she is incorrect.

1 comment:

Mr. H said...

Great Job

Show the math and the errors in her explanation.