Approximately 45 murders are committed each day in the U.S.
One cannot base an average on a single statistic, in this case the person who answered this question took the total number of reported murders from the year 2008 (16,204) and divided it by 365. Which comes out to 44.394xxxxxxx So this answers the question How many murders were commited on average per day in the year 2008, which is not the question asked. The answer to the question asked would be closer to 30 based on a much more complex mathmatics. This is why it is important to site where/how you are getting your answers when you use averages.