Question

Assume a new measure of Intelligence Quotient (or IQ) has been developed. The mean IQ for the population is 100 and the standard deviation is 15. The standard deviation indicates the average distance an individual data value is from the mean is about 15 IQ points.

A. True
B. False

Answer 1

A True

Explanation:

Standard deviation is a measure of the dispersion of a set of data from its mean. It measure the spread of numbers in a set of data from its mean value.

A low standard deviation indicates that the values tend to be close to the mean (also called the expected value) of the set, while a high standard deviation indicates that the values are spread out over a wider range.

From the question, the mean IQ of the population is 100 and the standard deviation is 15; this indicates that the average distance of an individual data value is from the mean is about 15 IQ point that is the distance between a data point value and the mean is 15.