Before microwave ovens are sold, the manufacturer must check to ensure that the radiation coming through the door is below a specified safe limit. The amounts of radiation leakage (mW/cm2) with the door closed from 25 ovens are as follows (courtesy of John Cryer):

15 9 18 10 5 12 8 5 8 10 7 2 1 5 3 5 15 10 15 9 8 18 1 2 11 Display the data in a dot diagram.