CRA Quantitative & Qualitative Methods 3

Question 1

In a chi-square test of independence, the null hypothesis states that:

Accepted Answer

The two categorical variables are independent of each other

Answer

The chi-square test of independence tests whether two categorical variables are associated, with the null assuming no relationship between them.

Question 2

A researcher uses purposive sampling in a qualitative study. The main goal is to:

Accepted Answer

Select information-rich cases that best address the research question

Answer

Purposive sampling deliberately selects participants based on specific characteristics relevant to the research question, prioritizing depth over representativeness.

Question 3

When a researcher uses triangulation in a mixed-methods study, the primary purpose is to:

Accepted Answer

Cross-validate findings from different data sources or methods

Answer

Triangulation uses multiple methods, data sources, or researchers to cross-validate findings and enhance the credibility of conclusions.

Question 4

A Type II error in hypothesis testing occurs when the researcher:

Accepted Answer

Fails to reject a false null hypothesis

Answer

A Type II error (beta error) occurs when a researcher fails to detect a real effect because the null hypothesis is not rejected even though it is false.

Question 5

In grounded theory, theoretical sampling means:

Accepted Answer

Selecting cases based on emerging theory to further develop and saturate categories

Answer

Theoretical sampling in grounded theory involves collecting data guided by the emerging theory, continuing until theoretical saturation is reached.

(CRA) Certified Research Associate Practice Test

(CRA) Certified Research Associate Practice Test

CRA Quantitative & Qualitative Methods 3