On Saturdays, cars arrive at David Zebda's Scrub and Shine Car Wash at the rate of 80 cars per hour during the ten-hour shift.David wants a sample of 40 Saturday customers to answer the long version of his quality service questionnaire.He instructs the Saturday crew to select the first 40 customers.His sample is a __________.
A)convenience sample
B)simple random sample
C)systematic sample
D)stratified sample
E)cluster sample

Question

Quizplus · Accepted Answer

David's method of selecting the first 40 customers constitutes a convenience sample because it involves choosing individuals who are easiest to reach or readily available, rather than using a method that ensures every member of the population has an equal chance of being selected.

On Saturdays, Cars Arrive at David Zebda's Scrub and Shine