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Python Data Analysis

You're reading from   Python Data Analysis Perform data collection, data processing, wrangling, visualization, and model building using Python

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Product type Paperback
Published in Feb 2021
Publisher Packt
ISBN-13 9781789955248
Length 478 pages
Edition 3rd Edition
Languages
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Authors (2):
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Ivan Idris Ivan Idris
Author Profile Icon Ivan Idris
Ivan Idris
Avinash Navlani Avinash Navlani
Author Profile Icon Avinash Navlani
Avinash Navlani
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Toc

Table of Contents (20) Chapters Close

Preface 1. Section 1: Foundation for Data Analysis
2. Getting Started with Python Libraries FREE CHAPTER 3. NumPy and pandas 4. Statistics 5. Linear Algebra 6. Section 2: Exploratory Data Analysis and Data Cleaning
7. Data Visualization 8. Retrieving, Processing, and Storing Data 9. Cleaning Messy Data 10. Signal Processing and Time Series 11. Section 3: Deep Dive into Machine Learning
12. Supervised Learning - Regression Analysis 13. Supervised Learning - Classification Techniques 14. Unsupervised Learning - PCA and Clustering 15. Section 4: NLP, Image Analytics, and Parallel Computing
16. Analyzing Textual Data 17. Analyzing Image Data 18. Parallel Computing Using Dask 19. Other Books You May Enjoy

Moving averages

Moving averages, or rolling means, are time-series filters that filter impulsive responses by averaging the set or window of observations. It uses window size concepts and finds the average of the continuous window slides for each period. The simple moving average can be represented as follows:

There are various types of moving averages available, such as centered, double, and weighted moving averages. Let's find the moving average using the rolling() function, but before that, we'll first load the data and visualize it:

# import needful libraries
import pandas as pd
import statsmodels.api as sm
import matplotlib.pyplot as plt

# Read dataset
sales_data = pd.read_csv('sales.csv')

# Setting figure size
plt.figure(figsize=(10,6))

# Plot original sales data
plt.plot(sales_data['Time'], sales_data['Sales'], label="Sales-Original")

# Rotate xlabels
plt.xticks(rotation=60)

# Add legends
plt.legend...
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