Question

Indicate whether the following research sampling methods are convenience samples or random samples: I select 150 students from my local university for a study on stress among college students. I randomly assign 25 persons from my place of work to a control group and 25 to an experimental group for a study on workplace satisfaction. Using a random number generator, I select a minimum sample size study population of male U.S. citizens with a passport from a passport database obtained from the U.S. State Department. I survey all certified public high school teachers in the city of Chicago, Illinois. I administer a rapid HIV antibody test to the first 50 consenting adults older than age 18 who stop by my booth at the health fair.

Answer 1

Solution: Indicate whether the following research sampling methods are convenience samples or random samples:

I select 150 students from my local university for a study on stress among college students.

Answer: The given sample is convenience sample because it involves non-probabilistic approach and the subjects are selected because of their convenient accessibility.

I randomly assign 25 persons from my place of work to a control group and 25 to an experimental group for a study on workplace satisfaction.

Answer: It involves a random sampling method because participants are randomly assigned to control and experimental groups.

Using a random number generator, I select a minimum sample size study population of male U.S. citizens with a passport from a passport database obtained from the U.S. State Department.

Answer: It is a random sampling procedure because the participants are randomly selected using the random number generator.

I survey all certified public high school teachers in the city of Chicago, Illinois.

Answer: It involves convenience sampling procedure because only the selected portion is selected

I administer a rapid HIV antibody test to the first 50 consenting adults older than age 18 who stop by my booth at the health fair.

Answer: It follows convenience sampling method because it involves non-probabilistic approach and the subjects are selected because of their convenient accessibility.