If the headmaster of a private Montessori school wanted to know how parents of students in the school felt about a change in school curriculum, he could use every ninth file from his master list of parents and conduct a simple phone interview. The headmaster would be using a _____ sample.

Question

Quizplus · Accepted Answer

This method is an example of a systematic sampling technique, which is a type of random sampling. By selecting every ninth file, the headmaster is applying a fixed interval to choose participants, which is a systematic approach but still falls under the broader category of random sampling because each member of the population has an equal chance of being selected at the start.

If the Headmaster of a Private Montessori School Wanted to Know