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Find the geometric mean of a given Pandas DataFrame

  • Last Updated : 05 Sep, 2020

In this article, we will discuss how to find the geometric mean of a given DataFrame. Generally geometric mean of nth numbers is the nth root of their product.

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It can found using the scipy.stats.gmean() method. This function calculates the geometric mean of the array elements along the specified axis of the array (list in python).



Syntax:

scipy.stats.gmean(array, axis=0, dtype=None)

Approach :

  • Import module
  • Create Pandas DataFrame
  • Create a new column for the geometric mean
  • Find the geometric mean with scipy.stats.gmean()
  • Store into a new column
  • Display DataFrame

Step-by-Step Implementation :

Step 1: Importing module and Making Dataframe.

Python




# importing module
import pandas as pd
import numpy as np
from scipy import stats
  
# Create a DataFrame
df = pd.DataFrame({
    'Name': ['Monty', 'Anurag', 'Kavya', 'Hunny', 'Saurabh',
             'Shubham', 'Ujjawal', 'Satyam', 'Prity', 'Tanya'
             'Amir', 'donald'],
    'Match1_score': [52, 87, 35, 14, 41, 71, 95, 83, 22, 82, 11, 97],
    'match2_score': [45, 80, 62, 53, 49, 82, 36, 97, 84, 93, 39, 59]})
  
# Display DataFrame
df

Output :

Step 2:  Create an empty DataFrame column.



Python3




# Creating empty column in DataFrame
df['Geometric Mean'] = None
df

Output :

Step 3: Find Geometric mean with scipy.stats.gmean()  and store it into a new column.

Python3




# Computing geometric mean
# Storing into a DataFrame column
df['Geometric Mean'] = stats.gmean(df.iloc[:, 1:3], axis=1)
df

Output :




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