Python | Pandas dataframe.skew()

19 Feb, 2021
Python is a great language for doing data analysis, primarily because of the fantastic ecosystem of data-centric python packages. Pandas is one of those packages and makes importing and analyzing data much easier.
Pandas dataframe.skew() function return unbiased skew over requested axis Normalized by N-1. Skewness is a measure of the asymmetry of the probability distribution of a real-valued random variable about its mean. For more information on skewness, refer this link.
Pandas: DataFrame.skew(axis=None, skipna=None, level=None, numeric_only=None, **kwargs)
Parameters :axis : {index (0), columns (1)}skipna : Exclude NA/null values when computing the result.level : If the axis is a MultiIndex (hierarchical), count along a particular level, collapsing into a Seriesnumeric_only : Include only float, int, boolean columns. If None, will attempt to use everything, then use only numeric data. Not implemented for Series.
Return : skew : Series or DataFrame (if level specified)
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Example #1: Use skew() function to find the skewness in data over the index axis.
# importing pandas as pdimport pandas as pd  # Creating the dataframe df = pd.read_csv("nba.csv")  # Print the dataframedf
Let’s use the dataframe.skew() function to find skewness
# skewness along the index axisdf.skew(axis = 0, skipna = True)
Output : Example #2: Use skew() function to find the skewness of the data over the column axis.
# importing pandas as pdimport pandas as pd  # Creating the dataframe df = pd.read_csv("nba.csv")  # skip the na values# find skewness in each rowdf.skew(axis = 1, skipna = True)
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