Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15.
A standard deviation is a measure of dispersion of a set of data from its mean. You are given a mean of 100 and a standard deviation of 15. However, you were not given the number of samples and so you cannot use this equation SD = √[Ε(|x - xbar|)2 / n