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 practice as an art therapist, youâll need to earn a masterâs degree in counseling, marriage and family therapy, or a related discipline. Your journey to becoming an art therapist starts with four years of undergraduate study. You can major in any subject, but itâs important to complete some coursework in the following areas: Studio art classes in drawing, painting, and 3D media; General, developmental, and abnormal psychology; Show Me Schools Â»