Square Average

The Square Average is the average of 2 numbers, but a little differently. It is normally a little smaller then the actual average. An example I currently have is that the square average of 0 and 10 is sqrt(10), about equal to 0.316772266. Whenever Zero is on the lower end of the average, the square average is always the square root of the higher end. For example, The square average of 0 and 20 is sqrt(20). It is called a square average because it has to do with square roots (sometimes). I only know 1 time where the square average is the same as the actual average is 0 and 4, where the average is sqrt(4), which equals 2, and that is also the actual average of 0 and 4.