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

Understanding ad hoc and research reports

Ad hoc and research reports are similar in some ways and opposite in others. They both answer questions directly, but one is short and sweet while the other is very thorough. Let’s just jump right in, and you will see.

Ad hoc reports

Ad hoc reporting is an important part of a data analyst’s job. Simply put, ad hoc reports are short, quick reports that answer a simple question. How often you will perform ad hoc reports depends heavily on the position and why it was created. Some positions will spend most of their time on ad hoc reports, while other positions will focus on other types of reports, such as recurring reports, and will hardly ever see an ad hoc report request. For example, healthcare analysts will often get questions from all over a hospital or set of hospitals about one thing or another. On the other hand, a business analyst may spend most of their time on recurring reports and seldom get a direct question. Even...