General Formulas

Calculate Average

avg = total sum of all the numbers / number of items in the set

• Example 1: You earned $129, $139, $155 and $176 over the last 4 weeks. What is your average pay?

  • Step 1: Add up all of the numbers in the set. $129 + $139 + $155 + $176 = $599

  • Step 2: Divide Step 1 by the total number of items in the set. There are 4 items in the set, so $599 / 4 = $149.75