Suppose the Ordinary Least-Squares Approach to a Regression Analysis Produced

question 47

Multiple Choice

Suppose the ordinary least-squares approach to a regression analysis produced the following: Y = 20 - 39X and R2 = .90.Which of the following statements is FALSE?

• A)For every unit change in X there is a corresponding negative change in the average value of Y of 39 units.
• B)90% of the variation in Y is associated with variation in X.
• C)The slope of the line is 20.
• D)The average value of Y given x = 10 is −370.
• E)If X = 0,then Y = 20.

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Definitions:

Antidepressant Drugs

Medications prescribed to alleviate symptoms of depression by correcting chemical imbalances of neurotransmitters in the brain.

Unpleasant Side Effects

undesirable reactions or consequences that may occur in addition to the intended effect of a medication or treatment.

2 Or 3 Weeks

A time frame spanning approximately fourteen to twenty-one days.

Serotonin Reuptake Inhibitors

A class of drugs typically used in the treatment of depression and anxiety disorders by increasing the levels of serotonin in the brain.