A Correlation Between Two Variables Implies That ________

question 32

Multiple Choice

A correlation between two variables implies that ________.

• A) there is a cause-effect relationship between the two variables
• B) it is impossible to measure one variable without measuring the other
• C) there is a mutual relationship between both the variables
• D) when one variable changes, the other variable always changes by exactly the same amount

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Definitions:

Endorphins

Endorphins are neurotransmitters in the brain that act as natural painkillers and mood elevators, often released in response to stress and pain.

Morphine

A potent opiate analgesic drug derived from the opium poppy, used to treat severe pain.

Codeine

An opiate used to treat pain, as a cough suppressant, or occasionally in the treatment of diarrhea.

Neurotransmission

The process by which nerve cells (neurons) communicate with each other through the exchange of chemical messengers called neurotransmitters.