Approximately 1,000 college students were asked to keep a record of the types and amounts of supplemental vitamins they consumed and how many colds they had over the course of a year.The amount of vitamin C consumed was compared with the students' incidences of colds.What types of study was this?

Question

Quizplus · Accepted Answer

This is an observational study as the researchers did not intervene or manipulate any variables. They simply observed and recorded the vitamin intake and incidences of colds in the participants.

Approximately 1,000 College Students Were Asked to Keep a Record