CRS Study Guide 2026
Everything you need to pass the CRS exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 CRS Exam Format at a Glance
📚 CRS Topics to Study (69)
✍️ Sample CRS Questions & Answers
1. In regression analysis, multicollinearity refers to:
Multicollinearity occurs when independent variables in a regression model are highly correlated with each other, inflating standard errors.
2. Which data quality issue occurs when records are counted more than once in a dataset?
Duplication errors inflate record counts and distort analyses, and must be identified and removed during data cleaning.
3. Which analysis method tests relationships between variables?
Correlation analysis is a statistical method specifically designed to examine the strength and direction of a linear relationship between two or more quantitative variables. It helps researchers understand if and how variables move together, indicating a potential association. While it shows relationships, it's important to note that correlation does not imply causation.
4. A researcher wants to determine if there is a statistically significant difference in mean scores among three or more independent groups. Which test is most appropriate?
One-way ANOVA compares means across three or more independent groups simultaneously, controlling the Type I error rate.
5. When a study measures participants at multiple time points to track change over time, it is called a:
Longitudinal studies follow the same participants over an extended period to examine how variables change over time.
6. Which critical appraisal tool is commonly used to assess the quality of qualitative studies in a literature review?
The CASP (Critical Appraisal Skills Programme) Qualitative Checklist evaluates rigor, credibility, and relevance of qualitative research.