Sampling Methods and Their Characteristics

The video tutorial covers various non-probability sampling methods, including purposive, quota, convenience, voluntary, and snowball sampling. Each method is explained with examples, highlighting their applications, advantages, and limitations. The tutorial emphasizes the importance of understanding the characteristics and objectives of each sampling method to effectively apply them in research.

Which of the following is NOT a non-probability sampling method?

• Purposive Sampling

• Quota Sampling

• Snowball Sampling

• Simple Random Sampling

In purposive sampling, what is the primary basis for selecting participants?

• Age group

• Researcher's judgment

• Random selection

• Geographical location

What is a key advantage of purposive sampling?

• It is quick to implement

• It requires no expertise

• It allows for easy generalization

• It is inexpensive

Quota sampling ensures representation of subgroups based on what?

• Convenience

• Proportional characteristics

• Researcher's preference

• Random chance

In quota sampling, what can a researcher adjust to ensure subgroup representation?

• Sample size

• Quota levels

• Survey questions

• Data analysis method

What is a major drawback of convenience sampling?

• It is time-consuming

• It is expensive

• It may not represent the population

• It requires complex analysis

Voluntary response sampling is often biased because:

• It relies on random selection

• It requires a large sample size

• It is too expensive

• Participants self-select based on strong opinions

Snowball sampling is particularly useful for studying which type of populations?

• Easily accessible populations

• Populations with rare traits

• Populations with known demographics

• Large populations

In snowball sampling, how are new participants typically recruited?

• By selecting from a database

• Via referrals from existing participants

• By public advertisement

• Through random selection

Which sampling method is also known as chain referral sampling?

• Convenience Sampling

• Snowball Sampling

• Quota Sampling

• Purposive Sampling