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卡方分布


卡方分布

卡方分布被用作验证假设的基础。

它有两个参数

df - (自由度)。

size - 返回数组的形状。

示例

提取一个自由度为 2,形状为 2x3 的卡方分布样本

from numpy import random

x = random.chisquare(df=2, size=(2, 3))

print(x)
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卡方分布的可视化

示例

from numpy import random
import matplotlib.pyplot as plt
import seaborn as sns

sns.distplot(random.chisquare(df=1, size=1000), hist=False)

plt.show()

结果

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