Averages - sorry no mathematics section

[15goddess15]

Not really a sience matter - more mathematics however this along with science seems to me at least to be the most appropiate category.
If there are two modes in a set of data what do you do? I know that if there are two medians then you add them together and divide them into two, however how do you figure out the mode.
For example if the numbers 15 and 18 occur the most in my set of data what shall i write in my investigation.

[Catron]

See my answer in science.

[fiction-factory]

Both. The distribtion is bimodal. nearly 10 years too late but I suppose the answer will stay on AnswerBank forever now.