Answer:
Root-mean-square (RMS)
Step-by-step explanation:
Arithmetic average is the average of all the values of the surface peaks and valleys.
[tex]AA=\frac{\sum^n_{i=1}|y_i|}{n}[/tex]
Root mean square is the root of the sum of the squares of each of the values of the surface peaks and valleys divided by the number of values
[tex]RMS=\sqrt{\frac{\sum^n_{i=1}{y_i}^2}{n}}[/tex]
where n = the number of values
So, the root-mean-square RMS is always greater than the arithmetic average (AA).
