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Practical Data Analysis Cookbook

You're reading from   Practical Data Analysis Cookbook Over 60 practical recipes on data exploration and analysis

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Product type Paperback
Published in Apr 2016
Publisher
ISBN-13 9781783551668
Length 384 pages
Edition 1st Edition
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Author (1):
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Tomasz Drabas Tomasz Drabas
Author Profile Icon Tomasz Drabas
Tomasz Drabas
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Toc

Table of Contents (13) Chapters Close

Preface 1. Preparing the Data FREE CHAPTER 2. Exploring the Data 3. Classification Techniques 4. Clustering Techniques 5. Reducing Dimensions 6. Regression Methods 7. Time Series Techniques 8. Graphs 9. Natural Language Processing 10. Discrete Choice Models 11. Simulations Index

Producing descriptive statistics


To fully understand the distribution of any random variable, we need to know its mean and standard deviation, minimum and maximum values, median, mode, first and third quartiles, skewness, and kurtosis.

Sometimes, it is good to perform statistical testing to confirm (or disprove) whether our data follows a specific distribution. This, however, is beyond the scope of this book.

Getting ready

To execute this recipe, all you need is pandas. No other prerequisites are required.

How to do it…

Here is a piece of code that can quickly give you a basic understanding of your data. We assume that our data was read from a CSV file and stored in the csv_read variable (the data_describe.py file):

# calculate the descriptives: count, mean, std,
# min, 25%, 50%, 75%, max
# for a subset of columns
csv_desc = csv_read[
    [  
        'beds','baths','sq__ft','price','s_price',
        'n_price','s_sq__ft','n_sq__ft','b_price',
        'p_price','d_Condo','d_Multi-Family',
    ...
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