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.

Question

Quizplus · Accepted Answer

The distribution of IQ scores within the population tend to show a bell-shaped curve with most scores in the middle, indicating an average or normal distribution of intelligence. This means that there are equal numbers of scores falling above and below the mean, and a smaller number of scores at the extremes of high and low IQ. This is consistent with what is known as the normal distribution, or Gaussian distribution, which is a common pattern in many natural phenomena.

The Distribution of IQ Scores Within the Population Tends to Show