Answer :
Answer:
As one standard deviation above the mean.
Explanation:
This is explained because the average (the arithmetic mean) is 100, and the standard deviation is 15 points. It can be concluded that a score of 115, would be one standard deviation to the right of the mean (above the mean).
The score of 115 could be said as one standard deviation that is above the mean as per normal distribution.
What is the standard deviation?
Standard deviation implies the depression of the data set with regards to mean value. Hence, a lower value of standard deviation would imply a lower spread of data across the mean and vice versa.
Computation of score value of IQ
Mean is given as 100 with standard deviation as 15, the IQ score would be:
[tex]100+15\\=115[/tex]
Hence, the mean is explained that the value of standard deviation is higher than the mean value.
Learn more about standard deviation here:
https://brainly.com/question/24967042