Non-probability Sampling Scenarios

Question 1

A university professor wants to study student stress levels before exams. Instead of selecting a random group, the professor asks students from their own class to answer a survey.

Answer 1

Convenience Sampling

Question 2

A study on illegal online gambling starts with a few known gamblers who refer their friends, who then refer more people, gradually expanding the sample.

Answer 2

Snowball Sampling

Question 3

A market research company wants to survey 100 people, ensuring that the sample includes 50 men and 50 women.
The researchers actively seek out participants to meet these quotas without using random selection.

Answer 3

Quota Sampling

Question 4

A researcher studying the impact of social media marketing on small businesses specifically selects business owners who actively use social media for promotion.

Answer 4

Purposive Sampling

Question 5

A journalist is writing an article about social media addiction and asks her friends and colleagues for their opinions.

Answer 5

Convenience Sampling

Question 6

A health researcher is studying rare diseases and asks one participant to refer others who also have the same condition.

Answer 6

Snowball Sampling

Question 7

A political surveyor ensures that their study includes a set number of participants from different age groups but does not select them randomly.

Answer 7

Quota Sampling

Question 8

A documentary filmmaker interviews only environmental activists because they have special knowledge about climate change.

Answer 8

Purposive Sampling

Question 9

A researcher in a small town wants to study teenage drinking habits, so he starts with one interviewee and asks them to introduce him to other teens who drink alcohol.

Answer 9

Snowball Sampling

Question 10

A market researcher ensures that their survey includes 50 men and 50 women, even if they are not randomly chosen.

Answer 10

Quota Sampling