Astatistics professor asked students in a class their ages. on the basis of this information, the professor states that the average age of all the students in the university is 21 years.
this is an example of a:

a. census
b. descriptive statistics
c. an experiment
d. statistical inference

Option D. statistical inference        

Step-by-step explanation:

We are given the following situation in the question:

"A statistics professor asked students in a class their ages. On the basis of this information, the professor states that the average age of all the students in the university is 21 years."

This is a n example of statistical Inference.

step-by-step explanation:

one set of data has more variation than the other. hope this !