The distribution of IQ scores within the population tends to show
a. that most scores cluster at the bottom of the scale.
b. a bell-shaped curve with most scores in the middle.
c. a U-shaped curve with most scores falling at both ends and a few scores in the middle.
d. that most scores cluster at the top end of the scale.
ANSWER: b
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A sample whose characteristics are the same as those of the population it is intended to reflect is called a ____ sample.
a) representative b) characteristic c) typical d) prototypical
According to the article The Nose Knows about the ability of mothers to detect the scent of their babies, in the main study reported, two quasi- experimental groups that were compared were ________ and ________
(a) mothers; sons (b) mothers and fathers; children (c) fathers; mothers (d) mothers; college students