Heroin has always been used primarily by lower socioeconomic groups
a. True
b. False
Indicate whether the statement is true or false
False
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Explain what a correlation coefficient measures, and provide examples of what different kinds of coefficients indicate.
What will be an ideal response?
Which of these drugs exerts its behavioral effects by slowing the release of neurotransmitters?
a. L-dopa b. Amphetamine c. LSD d. Marijuana
In calculating the regression coefficients we square the errors of prediction because
a. statisticians square everything. b. the sum of the errors would always be 0 for a great many lines we could draw. c. squaring makes the errors more striking. d. little errors are more important than big errors.
According to Schopenhauer, when all of our needs are temporarily satisfied, we feel:
a. bored. b. self-actualized c. at one with God. d. extreme pleasure.