PRE-TEST 4.1

1. What is the main difference between random and nonrandom sampling procedures?

• A. Random sampling ensures equal chance for all participants, while nonrandom sampling is based on subjective selection.

• B. Nonrandom sampling is more accurate than random sampling.

• C. Random sampling is used only in qualitative research.

• D. Nonrandom sampling requires statistical analysis, while random sampling does not.

2. Which of the following is NOT a random sampling method?

• A. Simple random sampling

• B. Stratified random sampling

• C. Convenience sampling

• D. Systematic sampling

3. A researcher wants to ensure that all subgroups in a population are proportionally represented. Which random sampling method should be used?

• A. Stratified random sampling

• B. Purposive sampling

• C. Snowball sampling

• D. Convenience sampling

4. If a researcher selects participants based on their availability and willingness to participate, which sampling method is being used?

• A. Simple random sampling

• B. Cluster sampling

• C. Convenience sampling

• D. Systematic sampling

5. A study aims to determine the opinions of Grade 10 students about online learning in a school with 2,000 students. What is the most appropriate sample size using a simple random sampling method?

• A. 10 students

• B. 50 students

• C. 200-400 students

• D. 2,000 students