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 an example of
A)a census
B)descriptive statistics
C)an experiment
D)statistical inference

Question

Quizplus · Accepted Answer

This statement by the professor is an example of statistical inference because it is an estimation of a population parameter (average age of all students in the university) based on a sample (ages of students in the class).

A Statistics Professor Asked Students in a Class Their Ages