Description
An Introduction to Data Science by Jeffrey S. Saltz and Jeffrey M. Stanton is an easy-to-read, gentle introduction for people with a wide range of backgrounds into the world of data science. Needing no prior coding experience or a deep understanding of statistics, this book uses the R programming language and RStudio® platform to make data science welcoming and accessible for all learners. After introducing the basics of data science, the book builds on each previous concept to explain R programming from the ground up. Readers will learn essential skills in data science through demonstrations of how to use data to construct models, predict outcomes, and visualize data.
Table of Contents
Preface
About the Authors
Introduction: Data Science, Many Skills
What Is Data Science?
The Steps in Doing Data Science
The Skills Needed to Do Data Science
Chapter 1 • About Data
Storing Data—Using Bits and Bytes
Combining Bytes Into Larger Structures
Creating a Data Set in R
Chapter 2 • Identifying Data Problems
Talking to Subject Matter Experts
Looking for the Exception
Exploring Risk and Uncertainty
Chapter 3 • Getting Started With R
Installing R
Using R
Creating and Using Vectors
Chapter 4 • Follow the Data
Understand Existing Data Sources
Exploring Data Models
Chapter 5 • Rows and Columns
Creating Dataframes
Exploring Dataframes
Accessing Columns in a Dataframe
Chapter 6 • Data Munging
Reading a CSV Text File
Removing Rows and Columns
Renaming Rows and Columns
Cleaning Up the Elements
Sorting Dataframes
Chapter 7 • Onward With RStudio®
Using an Integrated Development Environment
Installing RStudio
Creating R Scripts
Chapter 8 • What’s My Function?
Why Create and Use Functions?
Creating Functions in R
Testing Functions
Installing a Package to Access a Function
Chapter 9 • Beer, Farms, and Peas and the Use of Statistics
Historical Perspective
Sampling a Population
Understanding Descriptive Statistics
Using Descriptive Statistics
Using Histograms to Understand a Distribution
Normal Distributions
Chapter 10 • Sample in a Jar
Sampling in R
Repeating Our Sampling
Law of Large Numbers and the Central Limit Theorem
Comparing Two Samples
Chapter 11 • Storage Wars
Importing Data Using RStudio
Accessing Excel Data
Accessing a Database
Comparing SQL and R for Accessing a Data Set
Accessing JSON Data
Chapter 12 • Pictures Versus Numbers
A Visualization Overview
Basic Plots in R
Using ggplot2
More Advanced ggplot2 Visualizations
Chapter 13 • Map Mashup
Creating Map Visualizations With ggplot2
Showing Points on a Map
A Map Visualization Example
Chapter 14 • Word Perfect
Reading in Text Files
Using the Text Mining Package
Creating Word Clouds
Chapter 15 • Happy Words?
Sentiment Analysis
Other Uses of Text Mining
Chapter 16 • Lining Up Our Models
What Is a Model?
Linear Modeling
An Example—Car Maintenance
Chapter 17 • Hi Ho, Hi Ho—Data Mining We Go
Data Mining Overview
Association Rules Data
Association Rules Mining
Exploring How the Association Rules Algorithm Works
Chapter 18 • What’s Your Vector, Victor?
Supervised and Unsupervised Learning
Supervised Learning via Support Vector Machines
Support Vector Machines in R
Chapter 19 • Shiny® Web Apps
Creating Web Applications in R
Deploying the Application
Chapter 20 • Big Data? Big Deal!
What Is Big Data?
The Tools for Big Data
Index
