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 an example of a:

A. census
B. descriptive statistics
C. an experiment
D. statistical inference

Answer 1

Answer:

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.

• Statistical inference is the procedure of making inference or estimating parameters of a population with the help of test statistics.

• In the given situation the university students are the population and the students of a particular class are sample.

• The professor with the help of sample statistic (mean age of students in class) approximated the mean age of students in the university.