A Factor Other Than the Independent Variable That Might Produce

question 269

Multiple Choice

A factor other than the independent variable that might produce an effect in an experiment is called a

• A) wording effect.
• B) correlation coefficient.
• C) placebo effect.
• D) confounding variable.

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Definitions:

Hard-water Scum

The residue formed by the reaction of soap with the magnesium and calcium ions present in hard water.

Best Characterizes

Describes the trait or quality that is most typical or representative of something.

Soap Micelle

Spherical aggregates formed by soap molecules in aqueous solution, where the hydrophobic tails are sequestered inwards and the hydrophilic heads face outward.

Exterior Surface

The outermost boundary or layer of an object, material, or geometrical space that is exposed to the environment or another medium.