Variable Statistics - Texas Instruments TI-30X IIS User Manual

What's My Score? —

1-Variable Statistics

Problems
1. You and your friend are having a contest. Whoever gets the highest average on
their math tests for one quarter wins. Your scores are 98, 89, 78, 98, and 100.
Your friend's scores are 89, 89, 97, 90, and 100. Who is the winner?
Your average
Your friend's average
2. Your friend took a test on the day you were absent and scored 95. What score
do you need to get so that you are the winner?
Your friend's new average _______________________
The score you need
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TI-30X ÙS: A Guide for Teachers
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