How are IQ scores distributed in the population?

a) Most people have very high IQ scores

b) Most people have very low IQ scores

c) IQ scores tend to fall in the middle range of the distribution

d) IQ scores follow a skewed distribution pattern

c

IQ scores are distributed in the population in such a way that the scores of most people tend to fall in the middle range of the distribution. Only a few people have either very high or very low scores. The frequency distribution for the IQ scores tends to approximate a bellshaped curve, called the normal curve. This type of distribution is symmetrical around the central value, called the mean.