Problem:
Compute the mean of ${6, 0, -\frac{1}{\sqrt{5}}, -3 e, \frac{28}{5}, 0, \frac{18}{7}, -3, -8, 10, 2 e, -8}$.
Answer:
$0$
{'source': 'AMPS', 'file': 'amps/mathematica/counting_and_statistics/median/2780.txt'}