Relative frequencies practice 5 of 5
1. In a survey of 200 people, 60 people said they prefer chocolate ice cream. What is the relative frequency of people who prefer chocolate ice cream?
Relative frequency = Number of people who prefer chocolate ice cream / Total number of people surveyed
Relative frequency = 60 / 200
Relative frequency = 0.3 or 30%
2. Out of 150 students, 45 students have blue eyes. What is the relative frequency of students with blue eyes?
Relative frequency = Number of students with blue eyes / Total number of students
Relative frequency = 45 / 150
Relative frequency = 0.3 or 30%
3. In a group of 80 employees, 20 employees are managers. What is the relative frequency of managers in the group?
Relative frequency = Number of managers / Total number of employees
Relative frequency = 20 / 80
Relative frequency = 0.25 or 25%
4. A survey of 120 people found that 40 people like to read mystery novels. What is the relative frequency of people who like mystery novels?
Relative frequency = Number of people who like mystery novels / Total number of people surveyed
Relative frequency = 40 / 120
Relative frequency = 0.3333 or 33.33%
5. Out of 250 students, 75 students play a musical instrument. What is the relative frequency of students who play a musical instrument?
Relative frequency = Number of students who play a musical instrument / Total number of students
Relative frequency = 75 / 250
Relative frequency = 0.3 or 30%