A Researcher Conducts a Study to Determine If the Variable

question 64

Essay

A researcher conducts a study to determine if the variable of test anxiety influences performance on the GRE verbal and quantitative tests. He uses a questionnaire to assess individuals' test anxiety and classifies participants as high test anxious (n = 20) or low test anxious (n = 20). He is also interested in knowing whether high or low test-anxious individuals' performance is different for the computerized version of the test compared to the paper-and-pencil version of the test. Within each anxiety group, he randomly assigns participants to either the computer version or the paper version of the GRE tests. Participants then complete both the verbal and quantitative tests of the GRE in the test version they've been assigned (computer or paper).
-What is the manipulated independent groups variable in this study? What are the levels?

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Definitions:

Histogram

A graphical representation of the distribution of numerical data, showing the frequency of data points in successive fixed intervals of values.

Rolls

Cylindrical pieces of bread baked in various sizes or a list of names, typically used for recording purposes.

Normal Model

A type of statistical distribution that is symmetric, bell-shaped, and describes how continuous data points are dispersed or spread across the mean.

Crackers

A thin, crisp biscuit often made from flour and water that can be salted or savory, and is commonly served with cheese or other spreads.