The distribution of IQ scores
A)is approximately a U-shaped curve with more scores at each end and fewer in the middle.
B)shows that most people have IQ scores between 50 and 75.
C)shows that most people have IQ scores between 110 and 130.
D)is approximately a normal or bell-shaped curve with more scores in the middle and fewer at the ends.

Question

Quizplus · Accepted Answer

The normal or bell-shaped curve is the most commonly observed distribution of IQ scores, with most of the scores falling in the middle (around 100) and fewer scores at each end. This distribution is also referred to as a Gaussian distribution. Option A describes a bimodal distribution, while options B and C specify restricted ranges of IQ scores, which are not representative of the entire population's distribution.

The Distribution of IQ Scores