Research methods and techniques

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Question 20

Medium

A researcher, Dr. Aris, conducts a memory experiment and records three variables for each participant:

Variable $X$ : The exact time taken (in seconds) to complete a recall task.
Variable $Y$ : The rank order of participants based on their final recall accuracy (e.g., 1st, 2nd, 3rd...).
Variable $Z$ : The classification of each participant's preferred study environment (e.g., 'Quiet Room' or 'Background Music').

Which of the following statements is correct regarding the levels of measurement and handling of Dr. Aris's data?

Variable $Y$ represents interval data because there is a uniform distance of exactly one position between consecutive ranks (e.g., between 1st and 2nd, and 2nd and 3rd).

Variable $X$ can be converted into nominal data by grouping the completion times into binary categories (e.g., 'Fast' vs 'Slow'), though this process discards detailed information about individual differences.

Variable $Z$ is nominal data, meaning Dr. Aris can calculate a precise mean score for each study environment category and plot these directly on a normal distribution.

Variable $X$ represents ratio data, which is considered a lower level of measurement than Variable $Y$ because it does not order the participants into explicit ranks.

Research methods and techniques

Question 20

Research methods and techniques Questions

Research methods and techniques

Question 20

Research methods and techniques Questions