Marianne Schwartz, the owner of Handy Man Rentals, rents carpet cleaners to contractors and walk-in customers.
She is interested in arriving at a forecast of rentals so that she can order the correct quantities of supplies that go with the cleaners. Data for the past 10 weeks are shown here.

a. Prepare a forecast for weeks 6 through 10 by using a 4-week moving average. What is the forecast for week 11?
b. Calculate the mean absolute deviation as of the end of week 10.

Transcribed Image Text:

Week 1 2 3 4 5 Rentals 15 16 24 18 23 Week 6 7 8 9 10 Rentals 20 24 27 18 16