Sampling Techniques Quiz

What is the main purpose of sampling in research?

• To increase the cost of research

• To eliminate bias completely

• To generalize findings from a subset to the whole population

• To study the entire population

Which of the following is a characteristic of a good sample?

• It is representative of the population

• It is time-consuming to collect

• It is biased

• It is difficult to access

What type of sampling method gives every member of the population a known chance of being selected?

• Non-probability sampling

• Probability sampling

• Convenience sampling

• Judgment sampling

Which sampling method involves selecting individuals based on their availability?

• Random sampling

• Convenience sampling

• Cluster sampling

• Stratified sampling

What is the formula used to calculate sample size in large populations?

• Stratified Formula

• Random Sampling Formula

• Cochran's Formula

• Yamane's Formula

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

• Random sampling

• Systematic sampling

• Stratified sampling

• Quota sampling

What is the main disadvantage of non-probability sampling?

• It is time-consuming

• It does not allow for generalization

• It allows estimation of sampling errors

• It is more expensive

In stratified random sampling, what is the basis for selecting subgroups?

• Convenience of access

• Proportions of subgroups in the population

• Random selection of individuals

• Researcher's judgment

What is the recommended sample size for a population of 500 using Slovin's formula with a 5% margin of error?

• 223 respondents

• 100 respondents

• 300 respondents

• 50 respondents

Which sampling technique involves selecting a sample based on the researcher's prior knowledge?

• Purposive sampling

• Quota sampling

• Snowball sampling

• Random sampling