Question

Which one of the following is a parameter?

a. The proportion of voters in a national sample of 1500 who say they will vote for the incumbent president.
b. The mean GPA of all incoming freshmen at a state university.
c. The standard deviation of the weights of a sample of National League Football players.
d. The median income of a sample of 300 university professors.

Answer 1

The correct answer is b. The mean GPA of all incoming freshmen at a state university.

Explanation:

The definition of a parameter in statistics is any quantity represented in numbers in which a certain part of the population or some of its aspects is analyzed.

The parameter and partial analysis gives us a result that can be compared with the rest of the population.

In the case of the example given, we have the mean GPA of all incoming freshmen at a state university.

The GPA is an average number of the final grades that students have earned during the courses. The acronym stands for Grade Point Average.

The way to get to this is by taking the total number of final notes and dividing them by the number of grades awarded.

In this way we would obtain a parameter of the average grades of the total students.