You are looking at a normal distribution of IQ scores. A friend thinks that the graph is really cool and wants to know what score would place 50% of the population above the mean. You immediately say
A)100
B)90
C)115
D)80
E)you cannot tell from this graph

Question

Quizplus · Accepted Answer

In a normal distribution of IQ scores, the mean score is 100. Since the distribution is symmetrical, 50% of the population scores below the mean and 50% scores above. Therefore, a score of 100 places 50% of the population above it.

You Are Looking at a Normal Distribution of IQ Scores