Tableau has been blowing up in the Business Intelligence sphere in the past couple of years. Many organizations now require it to be a requisite if you are applying for data analytics, and therefore, knowing Tableau is sure to give you a head start over your competition. However, you will need to be well-prepared for your Tableau interview if you are going to crack it. In order to help you get your dream job, here are some common Tableau interview questions and answers.
Explain Tableau And Its Products.
This may be a general question, but this is still one of the trickiest to answer in a short time. You should remark about what the data visualization product can do, how it generally helps businesses and also the various platforms on which it can be used.
A word about the capabilities of Tableau Server, Desktop, Tableau online, Tableau Reader and Tableau Public is also sure to help your cause.
What Are The Measures And Dimensions?
Measures refer to the numeric quantities or the metrics of data available which can then be analyzed by the dimension table. The data is stored in an atomic form, and therefore, a number of records can be inserted at any time.
Dimensions are descriptive attribute values which can be used for multiple dimensions of the same attribute, each of which defines different characteristics.
What Is Aggregation And Disaggregation In A Tableau?
Both of the terms refer to ways in which the scatterplot can be developed, which is then used to compare and measure the values given. The former is calculated using different values of the same type, and calculations are done with all of the values in use.
For example, a set of values like 1, 3, 5 and 7 will return 1 as a result. Disaggregation, on the other hand, is used to analyze the values independently by a number of methods both dependently and independently.
Explain Context Filters And The Shortcomings They Have.
Context filters make it extremely easy for the user to filter the available data, b establishing a filtering hierarchy. If you want to improve the performance of the data, you can use more than a single context filter too. The feature of ‘Add to context” can be used to this effect, in Tableau.
The limitations of using context filters are the formation of temporary filters. The table in Tableau will reload with each time, and it may not contain the values which are filtered by either.
Explain About Page Shelf.
A page shelf is a powerful tool available in Tableau, which can be used to control the output display to great effect. It breaks the view into a line of pages which gives a different view on each page, so the user does not have to scroll too much.
If you want to be capable in data visualisation and want to learn Tableau, you should definitely check out the many courses which are on offer at Acadguild!