STATISTICS FOR NURSING RESEARCH A WORKBOOK EXAM PREPARATION PACK 2026 KEY CONCEPTS AND REVISION NOTES

STATISTICS FOR NURSING RESEARCH A
WORKBOOK CONCEPT REVIEW GUIDE 2026
RESEARCH DESIGN AND STATISTICAL
APPLICATIONS

◉ How is validity defined in research? Answer: The accuracy of a
measurement in capturing the intended concept.


◉ In classical test theory, what is the formula for an observed score?
Answer: True score + error.


◉ Which type of error primarily affects reliability? Answer: Random
error.


◉ Which type of error primarily affects validity? Answer: Systematic
error.


◉ What is face validity? Answer: The subjective assessment that a
tool appears to measure the intended concept.


◉ What is content validity? Answer: The extent to which experts
agree that items represent the concept being measured.

, ◉ What is the difference between concurrent and predictive
validity? Answer: Concurrent validity correlates with a measure at
the same time, while predictive validity forecasts future
performance.


◉ What is construct validity? Answer: The degree to which a tool
measures a specific theoretical concept.


◉ What does Cronbach's alpha measure? Answer: Internal
consistency, with values above 0.70 generally considered acceptable.


◉ What is the primary goal of qualitative research? Answer: To
understand human experience through themes and narrative data.


◉ What is grounded theory? Answer: A qualitative approach used to
build theory from collected data.


◉ What is saturation in qualitative research? Answer: The point at
which no new themes are emerging from the data.


◉ What is transferability in qualitative research? Answer: The
ability to apply findings to another setting.