Being about midway between extremes is considered "average". Not out of the ordinary, or common is included. Just an "average" day, or "average" hair, or "average" feelings about this post. We all experience "average" as we go through our existence. From the bell shaped curve of the last post, it can be visualized as follows.
The midpoint of the bell shaped curve is considered "average". Half of the folks are to the right of the line, and half of the folks are to left. This is called the "mean" in some languages [like statistics], but is generally found to hold true for large populations around the world. Ho...hum...being "average" is a common thread we all use as a measurement to judge our existence. A common ground it is as we go through this experience called life.