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.
To work as a physical therapist, you'll need to earn a graduate degree and become licensed.For more information on the education required for physical therapists, read on.o work as a physical therapist, you'll need to earn a graduate degree and become licensed.