Question

The grade distribution of the many

students in a geometry class is as follows.
Grade
A B с D F
Frequency 28 35 56 14 7
Find the probability that a student earns a
grade of F.
P(F) = [?]

Answer 1

Explanation:

We must divide the frequency of F grades by the total number of pupils in the class to get the likelihood that a student would receive an F.

The frequency distribution being what it is:

Level: A B C D F

28 35 56 14 7 times each year

You can determine the total number of pupils by adding the frequencies:

Students total: 28 + 35 + 56 + 14 + 7 = 140.

We can now determine the probability:

P(F) = Number of students overall / Frequency of F grades

P(F) = 7 / 140 P(F) = 0.05

As a result, the likelihood that a student will receive a F is 0.05, or 5%.