Book Image

CompTIA Data+: DAO-001 Certification Guide

By : Cameron Dodd
Book Image

CompTIA Data+: DAO-001 Certification Guide

By: Cameron Dodd

Overview of this book

The CompTIA Data+ certification exam not only helps validate a skill set required to enter one of the fastest-growing fields in the world, but also is starting to standardize the language and concepts within the field. However, there’s a lot of conflicting information and a lack of existing resources about the topics covered in this exam, and even professionals working in data analytics may need a study guide to help them pass on their first attempt. The CompTIA Data + (DAO-001) Certification Guide will give you a solid understanding of how to prepare, analyze, and report data for better insights. You’ll get an introduction to Data+ certification exam format to begin with, and then quickly dive into preparing data. You'll learn about collecting, cleaning, and processing data along with data wrangling and manipulation. As you progress, you’ll cover data analysis topics such as types of analysis, common techniques, hypothesis techniques, and statistical analysis, before tackling data reporting, common visualizations, and data governance. All the knowledge you've gained throughout the book will be tested with the mock tests that appear in the final chapters. By the end of this book, you’ll be ready to pass the Data+ exam with confidence and take the next step in your career.
Table of Contents (24 chapters)
1
Part 1: Preparing Data
7
Part 2: Analyzing Data
13
Part 3: Reporting Data
19
Part 4: Mock Exams

Finding links

Link analysis on this test is not what you would expect. If you try to look up link analysis on your own, you are going to be very confused. You will probably find something about it being part of network theory and the relationship between nodes, or you may find information on how Google analyzes hyperlinks. You might even find link analysis and criminology or link analysis and customer data analytics. The list goes on and on, and none of these are the link analysis that CompTIA wants you to know. Oops.

For the purpose of this exam, link analytics is a general category of tools and techniques that explain the relationships between variables. These range in terms of difficulty and accuracy. On one end of the spectrum, you have things such as scatter plots that are quick and easy but not particularly accurate. A lot of data analysts still use these as a place to start to see whether more accurate methods are required. In the middle, you have correlation analyses. There...