1. 1.2 Average Pay
An average is a single number used to represent a group of numbers. The most commonly used average is a simple average.
A simple average is found by adding several numbers and dividing the sum by number of items added.
A.k.a – MEAN

2. Averages in Grouped Data (Ex. 3), pg. 10
Problem:
Every summer Ms. Barucky sells shells at the seashore. The first week she made $100, second week she made $125, the third & fourth week she made $75 each week. What was her average weekly earnings for the month?

3. Averages in Grouped Data (Ex. 3), pg. 10
Answer: 1 2
Total earnings for the 4 weeks =
Divide total earnings by the weeks worked