Data Wrangling with R 1st Edition Solutions
This guide for practicing statisticians data scientists and R users and programmers will teach the essentials of preprocessing: data leveraging the R programming language to easily and quickly turn noisy data into usable pieces of information. Data wrangling which is also commonly referred to as data munging transformation manipulation janitor work etc. can be a painstakingly laborious process. Roughly 80% of data analysis is spent on cleaning and preparing datahowever being a prerequisite to the rest of the data analysis workflow (visualization analysis reporting) it is essential that one become fluent and efficient in data wrangling techniques.This book will guide the user through the data wrangling process via a step-by-step tutorial approach and provide a solid foundation for working with data in R. The author's goal is to teach the user how to easily wrangle data in order to spend more time on understanding the content of the data. By the end of the book the user will have learned:�How to work with different types of data such as numerics characters regular expressions factors and datesThe difference between different data structures and how to create add additional components to and subset each data structureHow to acquire and parse data from locations previously inaccessibleHow to develop functions and use loop control structures to reduce code redundancyHow to use pipe operators to simplify code and make it more readableHow to reshape the layout of data and manipulate summarize and join data setsRead more
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