I think a lot of those studying Mandarin Chinese have sooner or later started to wonder how many characters one really needs in order to normally function in a Chinese-only world or what for instance the most frequent 500 Chinese characters are. I personally have heard a lot of numbers and saw several Chinese character frequency lists, but often didn't understand why this or that character made it to the top 500 or why the list said I needed this or that number of characters to read something when I had the feeling the number was either overstated or understated so I decided to try to do a little study on my own.
I tried to analyze how many characters and words are approximately necessary to read news in Mandarin. I chose four sections of Taiwanese news - politics, international, society and finance, all written in traditional Chinese characters during a 6 week sample period.
If I'm correct, the field of computational linguistics deals with projects of this kind and I'm sure that there are several teams of experts at linguistic departments worldwide that must have done similar researches using much more sophisticated methods than I have and after the amount of effort it took me to analyze these few articles, I have a lot of respect for what they do.

