If the Correlation Between Variables a and B Is Zero

question 163

Multiple Choice

If the correlation between variables A and B is zero, then

• A) the relationship between the two variables is random.
• B) increases in A are associated with decreases in B.
• C) predictions of B, based on measurements of A, will be correct less often than chance.
• D) B causes A.

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Definitions:

Bipolar Disorder

A mental illness causing dramatic shifts in mood, energy, and activity levels, affecting the individual's ability to perform daily tasks.

Manic Symptoms

Manifestations of mania include elevated mood, increased activity or energy levels, and other symptoms that significantly impair one's ability to function.

Second Messengers

Molecules that relay signals received at receptors on the cell surface to target molecules in the cytosol or nucleus.

Neurotransmitters

Chemical messengers in the brain and body that transmit signals across synapses from one neuron to another, influencing mood, thought, and behavior.