Q2 M4 - SAMPLING TECHNIQUES

Which of the following refers to the entire group that you want to draw conclusions from?

• Elements
• Population
• Sample
• Variables

Which term refers to the specific group of individuals that you will collect data from?

• Elements
• Population
• Sample
• Variables

What was the target population of the study?

• The entire lake
• Rate of fish kills
• The lake in Western Siberia
• Water samples taken from each 100 sq m

What is the sample?

• The entire lake
• Rate of fish kills
• The lake in Western Siberia
• Water samples taken from each 100 sq m

All of these are examples of sampling bias except:

• The sample includes elements whose scores are all relatively higher or all relatively lower.
• The sampling method gives more opportunity to a specific class of elements and less to others.
• The researcher surveys elements who are close to him/her or only those he/she is comfortable surveying.
• The sample points were not independently chosen, i.e., the decision to include or exclude an element in the sample affects the decision to include or exclude another.

An (sampling) error occurs when the sample does not effectively represent the population. Which of the following is an example of sampling error?

• The sample includes elements whose scores are all relatively higher or all relatively lower.
• The sampling method gives more opportunity to a specific class of elements and less to others.
• The researcher surveys elements who are close to him/her or only those he/she is comfortable surveying.
• The sample points were not independently chosen, i.e., the decision to include or exclude an element in the sample affects the decision to include or exclude another.

What sampling technique is a completely random method in which every element has an equal probability of being chosen?

• Cluster sampling
• Stratified sampling
• Simple random sampling
• Systematic sampling

What sampling technique involves dividing the population into subgroups, but each subgroup should have similar characteristics to the whole sample?

• Cluster sampling
• Stratified sampling
• Simple random sampling
• Systematic sampling

What sampling technique involves collecting a sample from somewhere near or convenient to the researcher? It is sometimes called accidental, opportunity, or grab sampling.

• Convenience sampling
• Quota sampling
• Purposive sampling
• Snowball sampling

Which sampling technique is used where the researcher chooses a sample based on their knowledge about the population and the study itself?

• Convenience sampling
• Quota sampling
• Purposive sampling
• Snowball sampling