"""端到端最小流程:读数据 → 清洗 → 描述 → bootstrap → 出图。 体量刻意压到最小,只用来确认"环境 + 包 + 出图"这条链路是通的。 """ from __future__ import annotations import numpy as np import mcm_toolkit as mcm def main() -> None: mcm.set_seed(20260101) # 1) 造一份带缺失和离群点的数据(真实赛题里这步是 load_table) rng = np.random.default_rng(20260101) heights = rng.normal(170, 8, size=300) heights[[3, 77]] = [260.0, -10.0] # 两个录入错误 # 2) 找出离群点(约定:只标不删,删不删是人来决定) mask = np.asarray(mcm.data.detect_outliers(heights, method="iqr")) print(f"检出离群点 {mask.sum()} 个") clean = heights[~mask] # 3) 描述统计 print(mcm.stats.describe(clean)) # 4) 中位数的 bootstrap 置信区间(统计量没有解析分布时的通用答案) ci = mcm.bootstrap_ci(clean, statistic=np.median, n_resamples=10000, random_state=20260101) print(f"中位数 = {np.median(clean):.2f}, 95% CI = [{ci.params['low']:.2f}, {ci.params['high']:.2f}]") # 5) 出图(默认同时写 png + pdf,300 dpi) mcm.viz.mcm_style() fig, ax = mcm.viz.plot(clean, kind="hist", title="身高分布", xlabel="cm") paths = mcm.viz.save_figure(fig, "figures/quickstart_hist") print("已写出:", [str(p) for p in paths]) if __name__ == "__main__": main()