You and your classmates are researching the change in average month temperatures from 2000 to 2017. The following table shows the average monthly temperatures (rounded to whole degrees Fahrenheit) for Central Park in New York City for the years 1900 and 2017. The mean monthly temperature for the year 1900 is 53.75. The Mean Absolute Deviation for the temperatures in 1900 is approximately 15 degrees

What does a MAD of 15 degrees indicate about the 1900 monthly temperatures?