The Sum of the Deviations of Scores from the Mean

question 22

True/False

The sum of the deviations of scores from the mean is always positive.

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Definitions:

Visual Cortex

The part of the cerebral cortex that receives and processes sensory nerve impulses from the eyes.

Cataracts

A medical condition in which the lens of the eye becomes progressively opaque, resulting in blurred vision.

Figure-Ground Relationships

A visual perception principle that describes how people differentiate an object (the figure) from its surrounding area (the ground).

Brightness Constancy

A visual perception mechanism that ensures objects are perceived as having the same brightness even when the illumination conditions change.