尝试在 python 中复制描述性统计分析工具 excel / 添加模式到 describe() 函数

Question

我试图通过聚合 pandas 库中可用的一些描述性统计信息来使用 python（jupyter notebook）复制 excel 中的描述性统计信息（汇总统计信息）分析工具，但每次我在代码中添加模式功能，它总是 return :

ValueError: cannot combine transform and aggregation operations

我的代码是：

df2 = df[["pm10","so2", "co", "o3", "no2" ]]
df2.agg(
    {
        "pm10": ["mean", "sem", "median", "std", "var", "kurt", "skew", "min", "max", "sum", "count", "mode"],
        "so2": ["mean", "sem", "median", "std", "var", "kurt", "skew", "min", "max", "sum", "count", "mode"],
        "co": ["mean", "sem", "median", "std", "var", "kurt", "skew", "min", "max", "sum", "count", "mode"],
        "o3": ["mean", "sem", "median", "std", "var", "kurt", "skew", "min", "max", "sum", "count", "mode"],
        "no2": ["mean", "sem", "median", "std", "var", "kurt", "skew", "min", "max", "sum", "count", "mode"]
    }
  )

只有return包含模式功能时出错，其他功能正常。这是我的 dataset

我想要的结果：

Answer 1

尝试使用统计包中的模式函数：

from statistics import mode
func_list = ["mean", "sem", "median", "std", "var", "kurt", "skew", "min", "max", "sum", "count", mode]
df2.agg(
{
    "pm10": func_list,
    "so2": func_list,
    "co": func_list,
    "o3": func_list,
    "no2": func_list
})

Answer 2

这不是最简洁的方法，但它确实有效，我还添加了一些其他度量，如 nans 值和范围

df2 = df[["pm10","so2", "co", "o3", "no2" ]]      
                                                  
def describe(df2, stats):
    d = df2.describe()
    return d.append(df2.reindex(d.columns, axis = 1).agg(stats))

df2_desc = describe(df2, ["median", "var", "sem", "kurt", "skew", "sum",])

count_nan = df2.isnull().sum(axis=0) 
df2_append = df2_desc.append(pd.Series(count_nan, name='nans'))

df_mode = df2.mode(axis=0, numeric_only=True, dropna=True)
df2_concat = pd.concat([df2_append, df_mode])                             
df2_concat.loc['range'] = df2_concat.loc['max'] - df2_concat.loc['min']
df2_concat

尝试在 python 中复制描述性统计分析工具 excel / 添加模式到 describe() 函数

Trying to replicate descriptive statistics analysis tools excel in python / add mode to describe() function

python

statistics

summary