Question

Decide which sampling method is being used.

-       a.       b.       c.       d.       e.    Thirty-five athletes, 18 men and 17 women, are randomly selected from 243 male athletes and 187 female athletes.       -       a.       b.       c.       d.       e.    Every third dog at the clinic is checked for ticks.       -       a.       b.       c.       d.       e.    A researcher randomly selects an interviews fifty male and fifty female students.       -       a.       b.       c.       d.       e.    Based on 4000 responses from 22,500 questionnaires sent to its alumni, a major university estimated that the annual salary of its alumni was $103,000/year.       -       a.       b.       c.       d.       e.    A community college student gathers data on the age, make and model of cars in the student lot at the college.       -       a.       b.       c.       d.       e.    To ensure customer satisfaction, every 5th phone call received by customer service will be monitored.       -       a.       b.       c.       d.       e.    The names of 50 students in the union are written on 50 cards. The cards are placed in a bag, and 3 names are picked from the bag.       -       a.       b.       c.       d.       e.    A researcher for a publisher randomly selects 30 of the Omaha area schools and interviews all of the teachers at each of those schools.

a. Simple Random Sample (SRS) b. Convenience c. Systematic d. Cluster e. Stratified

Answer 1

1. e. Stratified sampling method is used in this process because sample is taken from a specific group that is of gender.

2. C. Systematic sampling is used here because every third dogs is checked with a continuous system.

3. b. Convenience sampling, since the sampling done here is with the ease of selection, here for making sampling easy a specifically male and female samples are selected.

4. b. Convenience sampling, here also based on given responses the conclusion is made hence it uses convenience sampling.

5. a simple random sampling process is used here to find the age, make, model of cars at the same time.

6. C. Systematic sampling, since with a proper system of answering every 5th phone call systematic sampling is used here.

7.a. Simple random sampling, as here a random of 3 cards are selected out of all 50 cards.

8. d, cluster sampling, Here cluster of schools are made to select and intercieiall the teachers.