The operation that can be used to determine the relative frequency of a person over 30 years old who prefers ocean swimming is to divide 185 by 609.
What is the relative frequency?
Relative frequency is the ratio of a particular group to the sum of the total frequency been studied. In order to determine the relative frequency of a person over 30 years old who prefers ocean swimming, 185 would be divided by the total number of people in the survey.
To learn more about division, please check: https://brainly.com/question/194007
#SPJ2