Random samples are used in population sampling situations when reviewing historical or batch data. The key to random sampling is that each unit in the population has an equal probability of being selected in the sample.
Individuals pursuing a career as an occupational therapist usually need to earn a post-baccalaureate degree from an accredited college or university or education deemed equivalent.  Education and training. A master's degree or higher in occupational therapy is the minimum requirement for entry into the field.
The first step towards reaching your dreams as an occupational therapist is to earn a relevant bachelorâs degree from an accredited institution. Depending on the requirements of your chosen graduate school, you may need to earn a bachelorâs degree specifically in occupational therapy. However, most will accept a four-year undergraduate degree in biology, psychology, sociology, kinesiology, health science, or even liberal arts.