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.
What kind of training is required to become a physical therapist? Most states require physical therapists to have at least a masterâs degree to practice, but many who are looking to enter the profession are pursuing Doctor of Physical Therapy (DPT) degrees, and in the future this may be the minimum required degree.