Book Image

Microsoft Power BI Data Analyst Certification Guide

By : Orrin Edenfield, Edward Corcoran
5 (1)
Book Image

Microsoft Power BI Data Analyst Certification Guide

5 (1)
By: Orrin Edenfield, Edward Corcoran

Overview of this book

Microsoft Power BI enables organizations to create a data-driven culture with business intelligence for all. This guide to achieving the Microsoft Power BI Data Analyst Associate certification will help you take control of your organization's data and pass the exam with confidence. From getting started with Power BI to connecting to data sources, including files, databases, cloud services, and SaaS providers, to using Power BI’s built-in tools to build data models and produce visualizations, this book will walk you through everything from setup to preparing for the certification exam. Throughout the chapters, you'll get detailed explanations and learn how to analyze your data, prepare it for consumption by business users, and maintain an enterprise environment in a secure and efficient way. By the end of this book, you'll be able to create and maintain robust reports and dashboards, enabling you to manage a data-driven enterprise, and be ready to take the PL-300 exam with confidence.
Table of Contents (25 chapters)
1
Part 1 – Preparing the Data
6
Part 2 – Modeling the Data
11
Part 3 – Visualizing the Data
15
Part 4 – Analyzing the Data
18
Part 5 – Deploying and Maintaining Deliverables
21
Part 6 – Practice Exams

Creating semi-additive measures

Power BI has three different types of measures it can perform: additive, non-additive, and semi-additive. We will check each of them out in the following sections.

Additive measures

An additive measure, such as sum, aggregates over an element. Our gross profit calculations are examples of additive measures. The gross profit for each product item group adds up to the gross profit for all product item groups.

Non-additive measures

Non-additive measures do not aggregate over anything. DISTINCT COUNT is a good example of this. The DISTINCT COUNT value of product SKUs ordered over a month does not equal the sum of distinct counts of every day of that month.

Semi-additive measures

Semi-additive measures use SUM to aggregate over some of the elements and different aggregations over other dimensions.

One common scenario that uses a semi-additive calculation is inventory.

Let's say we need to perform an inventory count in our warehouse...