In General,if the Variance of the Difference Scores Increases,what Will

question 9

Multiple Choice

In general,if the variance of the difference scores increases,what will happen to the value of the t statistic?

• A)It will increase in magnitude (move farther toward the tail of the distribution).
• B)It will decrease in magnitude (move toward 0 at the center of the distribution).
• C)It will stay the same; the t statistic is not affected by the variance of the difference scores.
• D)It may increase or may decrease; there is no consistent relationship between variance and the size of the t statistic.

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Definitions:

Reflexes

Involuntary and nearly instantaneous movements in response to a stimulus.

Gross Motor Skills

The abilities required to control the large muscles of the body for walking, jumping, balancing, and other physical activities.

Hippocampus

A region of the brain that is associated with memory formation, learning, and spatial navigation.

Myelination

The biological process of forming a myelin sheath around the axons of neurons, which significantly increases the speed at which electrical impulses travel across the nerve cells.