3ad378c1dc
Change dsh-sdd перенесён в openspec/changes/archive/2026-10-24-dsh-sdd, дельта dsh-sdd добавлена в openspec/specs/dsh-sdd/spec.md (7 требований). Co-Authored-By: DeepSeek Harness <noreply@deepseek.com>
520 B
520 B
Spec: stats
Module src/stats.py. Plain functions over a list of numbers. No third-party
dependencies; Python 3.8+ stdlib only.
mean(values)
Returns the arithmetic mean as float. Raises ValueError("empty") on an
empty list.
median(values)
Returns the median as float and does not mutate values.
- Odd length: the middle element.
- Even length: the mean of the two middle elements.
- Empty list:
ValueError("empty").
describe(values)
Returns {"count": int, "mean": float, "median": float}.