An A/B-testing package
Project description
ABetter
简介
ABetter 是一个在 Jupyter Notebook 中计算 A/B-Testing 效果的简单易用的 Python 工具包,其基于样本统计结果而非样本明细,因此无需导入样本,很适合用于大规模样本实验。
主要功能:
- 自适应选择检验方法;
- 输出检验表:显著性, 置信区间,MDE,Effect Size,增量效果;
- 绘制示意图。
安装
源代码托管在 GitHub,地址: https://github.com/SqRoots/ABetter。
您可以使用 pip 命令安装 ABetter。
# PyPI
pip install abetter
使用
检验均值型指标:
import abetter as ab
# 定义均值型指标样本(其中样本量n、样本均值mean、样本标准差std,是3个必要参数,其他为可选参数)
s1 = ab.SampleMean(n=1000000, mean=0.5000, std=0.2000, field_name='订单量', group_name='实验组', group_ratio=0.1)
s2 = ab.SampleMean(n=2000000, mean=0.5005, std=0.2010, field_name='订单量', group_name='空白组', group_ratio=0.2)
# 检验
ss = s1 - s2
ss # Pandas数据框存储于 ss.data_all
检验比率型指标:
import abetter as ab
# 定义比率型指标样本(其中样本量n、阳性样本量k,是2个必要参数,其他为可选参数)
s1 = ab.SampleProp(n=10000, k=60, field_name='交易人数', group_name='实验组', group_ratio=0.1)
s2 = ab.SampleProp(n=20000, k=50, field_name='交易人数', group_name='空白组', group_ratio=0.2)
# 检验
ss = s1 - s2
ss # Pandas数据框存储于 ss.data_all
绘制两个样本均值的分布:
import abetter as ab
# 定义均值型指标样本(前3个参数依次是:样本量n、样本均值mean、样本标准差std)
s1 = ab.SampleMean(1000, 0.50, 0.20)
s2 = ab.SampleMean(200, 0.55, 0.21)
# 绘图
fig, ax = ab.plot_two_mean(s1, s2)
fig
绘制两个样本均值之差的分布:
import abetter as ab
# 定义均值型指标样本(前3个参数依次是:样本量n、样本均值mean、样本标准差std)
s1 = ab.SampleMean(1000, 0.50, 0.20)
s2 = ab.SampleMean(200, 0.55, 0.21)
# 绘图
fig, ax = ab.plot_diff_mean(s1 - s2)
fig
todo
- 功能:评估最小样本量
- 功能:调研小样本比率检验如何科学的计算置信区间、MDE。
- 绘图:统计功效
- 输出:补充
__repr__和__str__ - 文档:参考文献与相关公式
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