Book Image

Tableau Certified Data Analyst Certification Guide

By : Mr. Harry Cooney, Mr. Daisy Jones
Book Image

Tableau Certified Data Analyst Certification Guide

By: Mr. Harry Cooney, Mr. Daisy Jones

Overview of this book

The Tableau Certified Data Analyst certification validates the essential skills needed to explore, analyze, and present data, propelling your career in data analytics. Whether you're a seasoned Tableau user or just starting out, this comprehensive resource is your roadmap to mastering Tableau and achieving certification success. The book begins by exploring the fundamentals of data analysis, from connecting to various data sources to transforming and cleaning data for meaningful insights. With practical exercises and realistic mock exams, you'll gain hands-on experience that reinforces your understanding of Tableau concepts and prepares you for the challenges of the certification exam. As you progress, expert guidance and clear explanations make it easy to navigate complex topics as each chapter builds upon the last, providing a seamless learning experience—from creating impactful visualizations to managing content on Tableau Cloud. Written by a team of experts, this Tableau book not only helps you pass the certification exam but also equips you with the skills and confidence needed to excel in your career. It is an indispensable resource for unlocking the full potential of Tableau.
Table of Contents (11 chapters)

Summary

Tableau allows for the creation of additional fields to supplement existing data sets using its calculated fields feature. Calculated fields can range from using simple pieces of logic to manipulate or transform existing fields to complex conditional statements and calculations fixing values at specific levels of aggregation.

Data types in calculated fields must be consistent and so must the aggregation of fields used. When the fields referenced in calculations are not aggregated, then the logic is applied row by row. When the fields are aggregated, then the aggregation takes place first, followed by the logic applied. Calculated fields can also be created without any reference to existing fields; for example, if a single string was to be referenced as a field, that string could be typed into and saved as a calculated field.

Aggregation in calculated fields allows you to pre-aggregate measures as well as to conduct logic on aggregated measures such as dividing one total...