CRA Research Design & Methodology 2

Question 1

A researcher wants to establish causality between a marketing campaign and sales lift. Which design is most appropriate?

Accepted Answer

Randomized controlled experiment

Answer

A randomized controlled experiment allows the researcher to isolate the causal effect of the campaign by controlling for confounding variables.

Question 2

In a between-subjects design, each participant is exposed to:

Accepted Answer

Only one experimental condition

Answer

In a between-subjects design, different groups of participants are assigned to different conditions rather than experiencing all conditions.

Question 3

Which sampling method divides the population into mutually exclusive groups and randomly samples from each?

Accepted Answer

Stratified sampling

Answer

Stratified sampling segments the population into strata (e.g., age groups) and draws random samples from each to ensure representation.

Question 4

A study collects data from the same respondents at multiple time points to track attitude change. This is a:

Accepted Answer

Panel study

Answer

A panel study follows the same individuals over time, enabling researchers to measure individual-level change.

Question 5

Which of the following best defines 'internal validity'?

Accepted Answer

The confidence that observed effects are caused by the independent variable

Answer

Internal validity refers to the degree to which a study's design rules out alternative explanations for the observed relationship.

(CRA) Certified Research Associate Practice Test