You can still say "average" (mean) for distributions over cycles (eg. on circles, von Mises distributions are analogous to Gaussians). von Mises on Wikipedia:

You can still say "average" (mean) for distributions over cycles (eg. on circles, von Mises distributions are analogous to Gaussians). von Mises on Wikipedia: http://en.wikipedia.org/wiki/Von_Mises_distribution http://en.wikipedia.org/wiki/Von_Mises_distribution