Variance Is

question 50

Multiple Choice

Variance is:

• A) the average squared deviations about the mean of a distribution of values.
• B) an empirically testable statement that is an unproven supposition developed in order to explain certain phenomena.
• C) a statement that asserts the status quo; that is, any change from what has been thought to be True is due to random sampling order.
• D) a statement that is the opposite of the null hypothesis.
• E) the error made by rejecting the null hypothesis when it is True.

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Definitions:

Hippocampus

A major component of the brain of humans and other vertebrates, involved in the consolidation of information from short-term memory to long-term memory, and in spatial memory that enables navigation.

Frontal Lobe

The part of the brain located at the front of each cerebral hemisphere, responsible for voluntary movement, expressive language, and managing higher level executive functions.

Propranolol

Propranolol is a medication that belongs to a class called beta blockers, used primarily to treat high blood pressure, heart rhythm disorders, and other cardiovascular conditions.

Serotonin

Serotonin is a neurotransmitter known for its role in feelings of well-being and happiness, and it affects mood, anxiety, and sleep among other physiological processes.