The box plot summarizes the number of people enrolling into fitness classes each month during one year at the City Gym. The mean of the data is 163.75, and the mean absolute deviation (MAD) of the data is 65. In January the next year, 400 people enroll in fitness classes at the gym. How does the MAD change if the data include January’s enrollment? A MAD of 65 means that the monthly enrollment counts were an average of 65 from the . An enrollment of 400 has a deviation value that is the MAD. The data will have variability when January’s enrollment is included. This will result in a new MAD that is 65.