A Question in a Survey of Microcomputer Users Asked: "Which

question 141

Multiple Choice

A question in a survey of microcomputer users asked: "Which operating system do you use most often: a.Apple OS 7, b.MS DOS, c.MS Windows 95, d.UNIX." The measurement level for these possible responses is _________________.

• A)nominal level
• B)ordinal level
• C)interval level
• D)ratio level
• E)relative level

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Definitions:

Observational Study

A study in which the investigator does not manipulate variables but rather observes and measures variables without intervention to find relationships.

Double-Blind Experiment

A study in which neither the participants nor the experimenters know who is receiving a particular treatment, used to eliminate bias.

Confounded

A situation in statistical analysis where the effect of one variable on an outcome cannot be separated from the effect of another variable, potentially leading to misleading conclusions.

Biased

Showing an unreasonable like or dislike for a person based on personal opinions.