An Advantage of Holding a Variable Constant Rather Than Using

question 27

Multiple Choice

An advantage of holding a variable constant rather than using random assignment to form your groups is that holding a variable constant ____.

• A) reduces error due to participant differences
• B) is easier than randomization
• C) prevents confounding
• D) ensures a nonbiased sample

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Definitions:

Toluene

A colorless, water-insoluble liquid hydrocarbon with a sweet smell, used as an industrial solvent and in the production of chemicals.

Water

A transparent, tasteless, odorless, and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms.

Isomer

Molecules that share the same chemical formula but have different arrangements of atoms in space, resulting in different properties.

Stereoteoisomer

Molecules that have the same molecular formula and sequence of bonded atoms but differ in the 3D orientations of their atoms in space.