Emily is a student at a large university. when visiting her professors during their office hours, she has noticed that many have refrigerators in their offices. she decides to survey 80 professors and count the total number of refrigerators they have. what type of observation is she making?

She is making "discrete" type of observation.

Discrete data emerge from perceptions that can just take certain numerical qualities, ordinarily considers such number of youngsters or number of patients going to a facility in a year. Requested categorical information are in some cases regarded as discrete information, this isn't right.  

Discrete data can just take specific qualities. There may conceivably be a limitless number of those qualities, however each is particular and there's no hazy area in the middle. Discrete information can be numeric - like quantities of apples - however it can likewise be straight out - like red or blue, or male or female, or great or awful.

the answer is i don't know