Book Image

Mastering Python Data Analysis

By : Magnus Vilhelm Persson
Book Image

Mastering Python Data Analysis

By: Magnus Vilhelm Persson

Overview of this book

Python, a multi-paradigm programming language, has become the language of choice for data scientists for data analysis, visualization, and machine learning. Ever imagined how to become an expert at effectively approaching data analysis problems, solving them, and extracting all of the available information from your data? Well, look no further, this is the book you want! Through this comprehensive guide, you will explore data and present results and conclusions from statistical analysis in a meaningful way. You’ll be able to quickly and accurately perform the hands-on sorting, reduction, and subsequent analysis, and fully appreciate how data analysis methods can support business decision-making. You’ll start off by learning about the tools available for data analysis in Python and will then explore the statistical models that are used to identify patterns in data. Gradually, you’ll move on to review statistical inference using Python, Pandas, and SciPy. After that, we’ll focus on performing regression using computational tools and you’ll get to understand the problem of identifying clusters in data in an algorithmic way. Finally, we delve into advanced techniques to quantify cause and effect using Bayesian methods and you’ll discover how to use Python’s tools for supervised machine learning.
Table of Contents (15 chapters)
Mastering Python Data Analysis
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface

Multivariate regression


In this section, we are adding a second variable to the linear model constructed previously. The function that we use to express the correlation now basically becomes a plane, y = k2x+ k1x+ k0 . Just keep in mind that x1 and x2 are different axes/dimensions. To clarify a bit, we can also write it as z = k2y + k1x + k0 . Just as described in the beginning of the chapter, we can write this as a matrix multiplication. The variable that we choose to include is an economic variable, the gross domestic product (GDP). As hypothesized before, the economy of the country could affect the suicide rate, as suicide prevention needs a developed medical system that isolates people in need and provides help, which is expensive.

Adding economic indicators

Luckily in this case, Pandas has a built-in remote data module that can be used to get certain indicators ( http://pandas.pydata.org/pandas-docs/stable/remote_data.html ). Currently, the services possible to query from Pandas...