The Following Scatterplot Indicates That the Relationship Between the Two

question 121

Multiple Choice

The following scatterplot indicates that the relationship between the two variables x and y is ________.

• A) weak and positive
• B) strong and positive
• C) strong and negative
• D) no relationship

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Definitions:

Positron Emission Tomography (PET)

A technique for creating images of brain activity by injecting a radioactive tracer into the blood and then, using a scanner, finding where in the brain the blood is being metabolized.

Substantia Nigra

A part of the brain involved in the control of movement and is associated with diseases such as Parkinson's due to its role in dopamine production.

Dopamine

A neurotransmitter in the brain that plays an important role in positive emotions and response to reward.

Norepinephrine

An important neurotransmitter in the brain that is associated with responses to stress; also called noradrenaline.