Eyebrow Hairs Are Always Shorter Than Hairs on Your Head

question 64

Multiple Choice

Eyebrow hairs are always shorter than hairs on your head because ________.

• A) eyebrow follicles are only active for a few months
• B) hormones in the eyebrow follicle switch the growth off after it has reached a predetermined length
• C) they grow much slower
• D) the vascular supply of the eyebrow follicle is one-tenth that of the head hair follicle

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Definitions:

Main Effects

The immediate effect an independent variable has on a dependent variable within an experimental setup.

Interaction Effects

Refer to how the relationship between two variables changes when a third variable is introduced.

Factorial ANOVA

A statistical test used to compare the means of more than two groups considering multiple independent variables.

Research Hypotheses

Proposed explanations or predictions that are based on limited evidence as a starting point for further investigation.