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

Congratulations!

    You made it through your first practice exam! Take a moment to relax and celebrate. Get a cookie; you deserve it. Make sure to hydrate and take care of anything you couldn’t do during the exam. Once you are set, compare your answers to the exam answers listed in the following section.

    CompTIA says that a pass score is 675 on a scale of 100 to 900, but they do not release any information on grading or how they weight the different questions. Also, if they are testing a new question and everyone gets it wrong, it probably won’t be counted against you. Overall, this makes grading a practice exam a pain. As a rough guideline, try to miss 20 or fewer questions. That said, what is important is that you note what topics you are struggling with and make sure you review them. It’s okay if you miss more than 20 on your first try, but make sure you review those topics and understand them before you try again.