Timothy recorded the monthly change in his savings account balance, in dollars, for 8 months. Month January February March April
May June July August Balance Change (dollars) −30 −15 55 40 −20 −45 −10 65 What is the average monthly change in Timothy's savings account balance? Enter your answer in the box.
To find the average, we'll sum up all the monthly changes and divide it by the number of months. Summing all the numbers, we get –30 + (–15) + 55 + 40 + (-20) + (-45) + (-10) + 65 = 40. The number of months is 8. So dividing it by 8, we get 40/8 = 5
So the average monthly change in Timothy's savings account balance is $5.
