For a Certain Data Set the Regression Equation Is Y

question 2

Multiple Choice

For a certain data set the regression equation is y = 2 + 3.5x.The correlation coefficient between y and x in this data set ___.

• A)must be 0
• B)is negative
• C)must be 1
• D)is positive
• E)must be 3

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Definitions:

Presynaptic Terminal

The end point of a neuron that conducts electrical signals and releases neurotransmitters to communicate with a neighboring neuron at a synapse.

Nitric Oxide (NO)

A gaseous signaling molecule involved in various physiological processes, including vasodilation and neurotransmission.

Erectile Dysfunction

A condition characterized by the inability to maintain an erection sufficient for satisfactory sexual performance.

Viagra

A pharmaceutical drug used to treat erectile dysfunction by increasing blood flow to the penis.