In the previously cited example (problem 3), suggest the appropriate sampling method in terms of the following:

(a) Probability vs. nonprobability

(b) Single unit vs. cluster unit

(c) Stratified vs. unstratified

(d) Equal unit vs. unequal unit

(e) Single stage vs. multistage

Problem 3

The American Academy of Pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. Provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.