1. Foundations

Research Methods — Quiz

Test your understanding of research methods with 5 practice questions.

Practice Questions

Question 1

In market research, stratified random sampling ensures representativeness by dividing the population into strata. Given a population of 10\,000 users with 60% in Stratum A and 40% in Stratum B, to obtain a total sample of 500, how many users should be sampled from each stratum?

Question 2

In designing Likert-scale surveys, which method reduces acquiescence bias (tendency to agree with statements)?

Question 3

In usability studies comparing two interface versions with the same participants and skewed task time data, which statistical test is most appropriate?

Question 4

In mixed-methods research, what is the main advantage of a sequential explanatory design (quantitative first, then qualitative)?

Question 5

When calculating a 99% confidence interval for a sample mean with $n=25$ and $\alpha=0.01$, which critical value from the $t$-distribution with 24 degrees of freedom should be used?