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Pandas DataFrame cov() 方法

❮ DataFrame 参考


示例

查找 DataFrame 中每一列的协方差

import pandas as pd

data = [[5, 6, 7], [2, 6, 9]]

df = pd.DataFrame(data)

print(df.cov())
自己尝试一下 »

定义和用法

cov() 方法查找 DataFrame 中每一列的协方差。


语法

dataframe.cov(min_periods, ddof)

参数

min_periodsddof 参数是 关键字参数

参数 描述
min_periods 数字 可选。指定返回足够好的结果所需的最小观察次数
ddof 数字 可选。指定自由度的增量。默认为 1

返回值

包含结果的 DataFrame 对象。

此函数不会更改原始 DataFrame 对象。


❮ DataFrame 参考

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