A teacher surveys a sample of students from Lake Middle School. He asks the students where they’d like to go for a field trip. He records these results: 80 choose the aquarium.
60 choose the science center.
30 choose the planetarium.
40 choose the farm.

The teacher wants to figure out the relative frequency of a student choosing the aquarium. He will then estimate how many students out of all 1000 at the school are likely to choose the aquarium.

Suppose the teacher surveys one student at random. Based on the survey results, what is the estimated probability that the student chooses the aquarium? This would be the relative frequency expressed as a percent.