I'm not too familiar with the concept, but I do know the mathematics behind the statistics, and frankly, what you've written above doesn't make sense. (Annualized mean = Mean x Freq) for example. If your goal is to convert the mean for one period to another period (for example, from monthly to annual), this approach would only weight the mean by the period, which wouldn't produce a meaningful number, I don't think.

Can you say where you came up with these formulae? And precisely what you mean by annualization (i.e. what is the context of this question)?