¿Cómo aumentar CPM en AdMob para aplicaciones móviles?

En adsense para web es posible, solo quiero saber si para app tambien funciona.

Common reasons for low match rate.
Your apps may experience less demand from Google while they evaluate your traffic quality. This can occur for up to one week after a new app or ad until is created.
If you still have low match rate after one week, use the following guide to understand common reasons for low match rate.
* Account changes
* Ad serving changes
* Usage changes
I unable to put link here because this is a new account.
Search on google.
Thanks