Top 6 Tableau Interview Questions and Answers: 2022

1. What is Tableau?

The Tableau is a powerful and fastest visualization tool which arranges data in an easily read and understandable format, that is used in the Business Intelligence (BI) Industry. It simplifies the raw data into an understandable format. Analysis of the data becomes faster with Tableau. The visualizations can be created in the form of dashboards.

2. What are the different data types in Tableau?

Tableau supports below data types. Data TypeMeaningExamplesStringCharacter Sequence. Enclosed in ''.Tableau', 'World'Number (Whole)Integers9Number

(decimal)Floating values.123.45BooleanThey are logical values.TRUE, FALSEDateDate"02/01/2015"Date & TimeDate and Time01 January 2019 05:55:00

PM Geographic Values Geographical Values India, Italy, Canada

3. What is data visualization?

Data Visualization is a form of visual communication. At its core, it’s about encoding aggregations and representing data visually, to gain insight from the data. Data visualization allows for immediate insight by tapping into our mind’s powerful visual processing system.

A number one purpose of records visualization is to speak records genuinely and successfully through graphs and charts. Effective visualization allows customers examine and cause approximately records and evidence. It makes complicated records extra accessible, understandable, and usable.

Think of all the popular data visualization works out there—they all tell an interesting story. Maybe the story was to convince you of something. Maybe it was to compel you to action, enlighten you with new information, or force you to question your own preconceived notions of reality.

Whatever it is, the best visualization, big or small, helps you see what the data has to say.

4. What is a Column chart?

A column chart visualizes data as a set of rectangular columns, their lengths being proportional to the values they represent. The vertical axis shows the values, and the horizontal axis shows the categories they belong to. In multi-series column charts, values are grouped by categories.

5. What is a Bullet graph?

A bullet graph is a variation of a bar graph developed to replace dashboard gauges and meters. A bullet graph is useful for comparing the performance of a primary measure to one or more other measures.

It shows a distribution showing progress towards a goal behind the bar.

6. What is the Heat Maps in Tableau?

Heat maps are graphical visualizations where marks on a chart are displayed as colors. As the marks “heat up” due their higher qualities or density of records, more dark color is shown.

A Heat map is used to compare categories using color and size. In this, we can distinguish two measures.