[Formation of mean values in growth spurts and incremental growth humps]

When averaging growth spurts and increase humps the question arises as to how much this procedure will affect the shape of the combined curves. It is shown that the frequency distribution is the main bar, reducing effects of disshaping . Examples for the growth spurts and humps show this influence in selected cases. Generally anxieties about unaccountable deformances can be cut down for the growth spurts and restricted for the increase humps.