PRC Data Collection & Analysis 2

Question 1

Which sampling method ensures every member of the population has an equal probability of being selected?

Accepted Answer

Simple random sampling

Answer

Simple random sampling gives every population member an equal and independent chance of selection, minimizing selection bias.

Question 2

In survey research, what does 'response rate' measure?

Accepted Answer

The proportion of selected participants who complete the survey

Answer

Response rate is the percentage of sampled individuals who actually complete and return the survey instrument.

Question 3

Which data collection approach is MOST prone to social desirability bias?

Accepted Answer

Face-to-face interviews

Answer

Face-to-face interviews introduce social desirability bias because respondents may alter answers to appear favorable to the interviewer.

Question 4

A researcher uses existing government census records for a new study. This is an example of:

Accepted Answer

Secondary data analysis

Answer

Secondary data analysis involves using data previously collected by others for purposes that may differ from the current study.

Question 5

What is the primary purpose of a codebook in quantitative data analysis?

Accepted Answer

To document variable names, codes, and value labels for a dataset

Answer

A codebook documents how variables are defined, coded, and labeled so analysts can correctly interpret and use the dataset.

(PRC) Professional Researcher Certification Practice Test