Problem:
Compute the mean of ${-\frac{29}{\pi }, -\frac{1}{\pi }, -\frac{25}{\pi }, -\frac{23}{\pi }, -\frac{11}{\pi }}$.
Answer:
$-\frac{89}{5 \pi }$
{'source': 'AMPS', 'file': 'amps/mathematica/counting_and_statistics/mean/41822.txt'}