A Bar Graph Displays the Mean Scores on a Test

question 19

Multiple Choice

A bar graph displays the mean scores on a test of mental rotation for students majoring in psychology or chemistry who have either high or low spatial abilities.Psychology and chemistry students with low spatial skills scored about 35 percent correct on the mental rotation test, while psychology and chemistry students with high spatial skills scored about 70 percent correct.What can be inferred from these data?

• A) There is an interaction between spatial ability and college major.
• B) There appears to be a main effect of mental rotation only.
• C) There appears to be a main effect of college major only.
• D) There appears to be a main effect of spatial ability only.

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Definitions:

Relate

To establish or understand the connection or relationship between two or more things.

Participants

Individuals who take part in a research study or experiment.

Significant Improvement

A notable or considerable increase in the state or quality of a condition or process.

Treatment

The means of managing or resolving a health issue, which can include medication, therapy, surgery, or other interventions.