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 two answers

    1. The answer is: Exploratory data analysis

    If you are unsure why, please review Chapter 6, Types of Analytics – Exploring Your Data

    1. The answer is: Gerbils and hamsters can lift the same amount

    If you are unsure why, please review Chapter 9, Hypothesis Testing – Understanding Type I and Type II Error

    1. The answer is: Redundant data

    If you are unsure why, please review Chapter 4, Cleaning and Processing Data – Managing Duplicate and Redundant Data

    1. The answer is: Percentage

    If you are unsure why, please review Chapter 8, Common Techniques in Descriptive Statistics – Understanding Frequencies and Percentages

    1. The answer is: Accept the alternative hypothesis and reject the null hypothesis

    If you are unsure why, please review Chapter 9, Hypothesis Testing – Learning P-Value and Alpha

    1. The answer is: Null hypothesis

    If you are unsure why, please review...