Here’s what: Someone figured out that the relationship between those numbers not only made beautiful math, but also beautiful art and architecture.

Mean The mean is the most commonly used measure of average . To calculate the mean, add the values together and divide the total by the number of values.

Calculating the mean is one of many methods of finding an average. To calculate the mean, you add up all the numbers in the set, then divide the total by the number of numbers you added. The mean ...