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Hypotheses
Proposed explanations made on the basis of limited evidence as a starting point for further investigation, often tested statistically.
Confounding Variables
External variables that can affect the outcome of an experiment, making it difficult to establish a clear cause-and-effect relationship.
Random Assignment
The assignment of participants to categories of an independent variable such that each participant has an equal chance of being assigned to each category.
Systematic Observation
An observational method that involves structured, consistent procedures for recording and analyzing phenomena.
Q26: Photosensitive receptor cells in the retina that
Q29: orth/o: _
Q42: Colored portion of the eye; surrounds the
Q49: T<sub>4</sub>: _
Q74: Movement toward the midline of the body<br>A)abduction<br>B)adduction<br>C)extension<br>D)fascia<br>E)flexion<br>F)insertion
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Q116: Removal of the pituitary gland: _ectomy
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Q173: Pertaining to hair and oil glands: _ous
Q193: Condition of absence of pigment in the