3. Business Analytics

A researcher is surveying opinions on a new city policy. They only interview people at a downtown coffee shop between 8-10 AM on weekdays. What kind of sampling bias is most likely?

• Random sampling bias

• Selection bias

• Response bias

• Measurement bias

Which of the following sampling techniques best ensures a representative sample of a diverse population?

• Convenience sampling

• Simple random sampling

• Judgment sampling

• Voluntary response sampling

A high school principal wants to understand student opinions about lunch quality. He selects every 10th student entering the building on Monday. What method is being used?

• Simple random sampling

• Stratified sampling

• Systematic sampling

• Cluster sampling

In stratified sampling, the population is:

• Randomly divided into groups with no common characteristic

• Grouped based on shared characteristics and sampled from each group

• Grouped by proximity and sampled entirely

• Chosen based on convenience

A survey about vacation preferences is sent out via email, but only 10% of people respond. This is most likely an example of:

• Cluster sampling

• Response bias

• Nonresponse bias

• Stratified sampling

Why is random sampling important in survey research?

• It reduces the sample size

• It ensures people answer honestly

• It minimizes bias and increases generalizability

• It simplifies data analysis

A company wants to study employee satisfaction by surveying departments separately and randomly selecting 10 employees from each. This is:

• Cluster sampling

• Stratified random sampling

• Systematic sampling

• Simple random sampling

Selecting survey participants from a list of customers who recently complained is an example of:

• Random sampling

• Representative sampling

• Biased sampling

• Stratified sampling

What is the primary risk of using a convenience sample?

• Too large a sample

• Time-consuming process

• Results may not generalize to the population

• Too complex to analyze

Which sampling method selects entire groups (e.g., classrooms) and surveys all individuals within those groups?

• Stratified sampling

• Simple random sampling

• Cluster sampling

• Systematic sampling