CRP Data Collection & Analysis 2 — Questions and Answers
Question 1: When using systematic random sampling, a researcher selects every 10th person from a list of 500. What is the sampling interval?
- 5
- 10 (Correct answer)
- 50
- 100
Correct answer: 10
The sampling interval is 10 because every 10th element is selected from the population list.
Question 2: Which data collection method is most appropriate for capturing sensitive or stigmatized behaviors in a research study?
- Face-to-face interviews
- Self-administered questionnaires (Correct answer)
- Telephone surveys
- Focus groups
Correct answer: Self-administered questionnaires
Self-administered questionnaires reduce social desirability bias, making respondents more likely to disclose sensitive information honestly.
Question 3: A researcher notices that survey response rates drop significantly after question 20 in a 40-question survey. This phenomenon is best described as:
- Response bias
- Respondent fatigue (Correct answer)
- Acquiescence bias
- Halo effect
Correct answer: Respondent fatigue
Respondent fatigue occurs when participants become tired or disengaged during long surveys, leading to lower quality responses or dropout.
Question 4: In content analysis, the unit of analysis refers to:
- The statistical test used to analyze text
- The specific element of content that is categorized and counted (Correct answer)
- The total word count of all documents analyzed
- The researcher's interpretive framework
Correct answer: The specific element of content that is categorized and counted
The unit of analysis is the specific element (word, phrase, theme, paragraph) that researchers identify, categorize, and count in content analysis.
Question 5: Which level of measurement allows for the calculation of a meaningful ratio between values?
- Nominal
- Ordinal
- Interval
- Ratio (Correct answer)
Correct answer: Ratio
Ratio measurement has a true zero point, which allows meaningful ratios to be computed (e.g., one value is twice another).
Question 6: A researcher wants to compare average satisfaction scores across three treatment groups. The most appropriate statistical test is:
- Chi-square test
- Independent samples t-test
- One-way ANOVA (Correct answer)
- Pearson correlation
Correct answer: One-way ANOVA
One-way ANOVA is used to compare means across three or more independent groups simultaneously.
Question 7: Inter-rater reliability in qualitative coding is commonly measured using:
- Cronbach's alpha
- Cohen's kappa (Correct answer)
- Pearson's r
- Intraclass correlation coefficient (ICC)
Correct answer: Cohen's kappa
Cohen's kappa is the standard statistic for measuring agreement between two raters on categorical coding decisions, accounting for chance agreement.
CRP Data Collection & Analysis 2
When using systematic random sampling, a researcher selects every 10th person from a list of 500.
What is the sampling interval?