Tableau Specialist Exam questions with correct answers

What's the difference between a live connection to a data source vs. an extract? - Answer Tableau Data Extracts are snapshots of data optimized for aggregation and loaded into system memory to be quickly recalled for visualization. Extracts tend to be much faster than live connections, especially in more complex visualizations with large data sets, filters, calculations, etc. Dimension - Answer Dimensions contain qualitative values (such as names, dates, or geographical data). You can use dimensions to categorize, segment, and reveal the details in your data. Dimensions affect the level of detail in the view. Measure - Answer Measures contain numeric, quantitative values that you can measure. Measures can be aggregated. When you drag a measure into the view, Tableau applies an aggregation to that measure (by default). Discrete Field vs. Continuous - Answer Continuous and discrete are mathematical terms. Continuous means "forming an unbroken whole, without interruption"; discrete means "individually separate and distinct." Green measures and dimensions are continuous. Continuous field values are treated as an infinite range. Generally, continuous fields add axes to the view. Blue measures and dimensions are discrete. Discrete values are treated as finite. Generally, discrete fields add headers to the view. Avg Function - Answer Ignores null values An aggregate calculation can be multiplied by a non-aggregate constant - Answer True