Paula Examined Differences in College Persistence Between Students Who Took

question 14

Multiple Choice

Paula examined differences in college persistence between students who took the SAT either before their junior year or during their junior year of high school. She compared students with the same score and found that students had taken the SAT before their junior year of high school were more likely to stay in college than those who had taken the SAT during their junior year. Paula employed which method for controlling the extraneous variable, performance, in her study?

• A) Matching
• B) Comparing homogeneous subgroups
• C) Analysis of covariance ANCOVA)
• D) Manipulation of independent variable

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Definitions:

Reactants

Substances initially present in a chemical reaction that are consumed during the reaction to make products.

Activation Energy

Minimum amount of energy required to start a reaction.

Reactant Molecules

Substances that take part in a chemical reaction and are consumed to form products.

Transition State

A high-energy state during a chemical reaction where reactants are converted to products, representing a point of maximum energy along the reaction pathway.