1. Introduction to Digital Marketing
2. Website Planning and Creation
Top Tableau Interview Questions for Freshers
1. What is a map of an area?An area chart is nothing more than a line graph, with colour or pattern filling the space between the x-axis and lines. These graphs are the standard approach to show stacked lines and are often used to indicate accumulated totals over time.
2. A Stacked Column Chart: What Is It?
Bars are piled vertically one on top of another in a stacked column chart. The value of the data point determines the length of the bar. The best chart to understand changes in all variables is one with stacked columns. When there are more than two series, this form of chart should be examined.
3. A stacked bar chart is what?
Multiple bars are placed horizontally, one below the other, in a stacked bar chart. The value of the data point determines the length of the bar. A stacked bar chart simplifies the task since it allows us to see changes in all of the variables side by side. We can track how their sum fluctuates and project future values.
4. The Line Chart: What Is It?
A common form of diagrammatic method for displaying data is the line chart, which links the various data points to show the data. We can quickly visualise a sequence of data, identify historical trends, and forecast future values. The category it falls under is represented on the horizontal axis, while the values are represented on the vertical axis.
5. What does a Tableau bar chart look like?
Because the values of the bars when they represent the data are proportionate to their lengths, the bar chart shows the data as a collection of rectangular bars. The values are displayed on the horizontal axis, and the category to which they belong is displayed on the vertical axis. The bar chart is therefore a vertical adaptation of the column chart.
6. A column chart is what?
Given that rectangle columns' lengths for representing data are proportionate to values, a column chat depicts the data as a collection of rectangular columns. The data are displayed on the vertical axis, while the category they fall under is displayed on the horizontal axis.
7. What distinguishes embedded data sources from public data?
Multiple workbooks can use the connection information included in the published data source, which is independent of workbooks.
Although it is linked to the workbooks, the connection information is included in the embedded data source.
8. What does Tableau's Hierarchy mean?
When working with big amounts of data, data may get very screwed up. To keep your data organised, you may quickly design hierarchies using Tableau. Even if you don't need it, it is already embedded into your data, making it simple to manage, organise, and track.
9. Tableau Reader: What is it?
The Tableau packed workbooks may be viewed and interacted with using Tableau Reader, a free desktop programme. Only the files may be opened; new connections to the workbook cannot be made.
10. What are Tableau's file size restrictions?
There are no file size restrictions with Tableau. Additionally, there is no row or column restriction on the data import.
11. What does a histogram chart mean?
The distribution of continuous data over a certain time period is displayed on a histogram graphic. We may identify extreme spots, gaps, uncommon values, and more concentrated values using this graph.
12. What is a Gantt chart?
The progress of value during the period is shown on the Gantt chart. Along with the time axis, it has bars. It is a tool for project management. Each bar represents a job in the project structure and measures it here.
13, What is a bullet graph?
A variation of a bar graph is a bullet diagram. It is in charge of contrasting the results of one measure with those of other measurements.
14. What is a dual axis?
Two metrics are displayed on a single graph using a dual-axis. It enables you to simultaneously compare two metrics. This dual-axis is used on a lot of websites to display comparisons and growth rates.
15. Describe the published data source.
When you're prepared to make a data source accessible to other users of the tableau desktop software. It may be published online or to the Tableau server. Alternately, you may make it accessible by saving the identical document as an embedded text or Excel file.
16. What does Tableau's context filter restriction mean?
When we establish a context filter, Tableau creates a temporary table that must constantly be refreshed each time the view is activated. As a result, performance will suffer if the database's context filter is altered because a new computation of the temporary table is required.
17. What does Tableau's Mark Card mean?
We may adjust mark attributes like colour, size, type, shape, detail, label, and tooltip by dragging fields on a card that is located to the left of the display.
18. What is a blended axis?
To display all the marks in a single window, several measurements might share a single axis. By sliding the first measure along one axis and the second along the currently active axis, we may combine measures.
19. What is a dual axis?
Two metrics are displayed on a single graph using a dual-axis. It enables you to simultaneously compare two metrics. This Dual-axis is used on a lot of websites to display comparisons and growth rates.
20. How does data modelling work?
Analysis of data items utilised in business or other contexts, as well as discovery of the connections between these data objects, are both done through data modelling. The process of doing object-oriented programming begins with this.
21. What variations of joins does Tableau offer?
Like SQL, Tableau operates similarly. As a result, it supports all SQL Joins.
- Left Outer Join
- Right Outer Join
- Full Outer Join
- Inner Join
- Facts are measurements of data in numbers. Fact tables are where they are kept. Fact tables keep track of the specific data that dimension tables will investigate. Foreign keys associated with dimension tables are present in fact tables.
- Data's descriptive properties are called dimensions. The dimensions table will keep track of those. The dimension table will be used to record information on customers, such as their name, phone number, and email address.
The tale may be thought of as a sheet, which is a grouping of spreadsheets and dashboards used to present data insights. The relationship between facts and results, and how it affects the decision-making process, can be demonstrated via a tale. A tale may be broadcast to an audience or published online.
24. What does Tableau's Page Shelf mean?
The views are divided into pages by page shelf. On each page, a different view is displayed. This feature allows you to see how each field affects the remaining data in the display.
25. Briefly describe the tableau dashboard?
A Tableau dashboard is a collection of numerous views that enables you to compare multiple types of data at once. If there is any change to the data that directly affects dashboards, datasheets and dashboards are connected. It is the most effective method for seeing and analysing the data.
26. What various data formats does Tableau support?
Tableau accepts the following data types.
Examples of Data TypeMeaning
Sequence of StringCharacters. encircled with a ". Tableau, Number of the World (Whole) Integers 9Number (decimal) Floating points. 123.45 Boolean These values follow logic. FALSE, TRUE Date Date"02/01/2015" Time & Date Time and date January 1, 2019, 05:55:00 Regional Values Locational Values Italy, Canada, India
27. What is a Tableau parameter? How does it function, too?
In computations, parameters can take the place of constant values because they are dynamic numbers.
28. Define TreeMap?
Data are arranged hierarchically and displayed as a collection of nested rectangles in a visualisation called TreeMap. Rectangles are sized and coloured according to the projected values of the data points they represent. The child parts of parent rectangles will be tiled together.
29. What is a heat map?
A heat map is a visual representation of data that makes use of colour coding to show various data values. Dark hues will be displayed on the map when the markings get hotter due to their increased value.
30. LOD Expression definition
At the data source level, LOD Expression, which stands for Level of Detail Expression, is used to execute sophisticated searches involving several dimensions.
