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

Practice Exam One

This practice exam will give you the correct number of questions in the correct proportions. There are certain types of questions or interactive dashboards that cannot be simulated in a book, but this exam will give you a good idea of what material you know well and what material you may need to review. If you know the material well, the format of the questions should not be a problem. Also note that CompTIA is constantly updating and adding new questions on the same topics, written by different subject matter experts. Some of these questions will be confusing, poorly written, and may not even follow the CompTIA guidelines. They have to test questions to see whether they work, and they don’t always. Expect a weird question or two, and don’t let it throw you off.

To make this practice exam as useful as possible, you should follow the testing experience as closely as possible. Make sure you are in a quiet and clean environment before you commence...