1 Oct 2026, 18:37 UTC915 views5 reactionsread 6 October 2026 🔥 Top 10 Theoretical Interview Questions Every Data Analyst Must Prepare 📊
Data Analyst interviews are not just about writing SQL queries — interviewers also test your understanding of core concepts across different tools.
1️⃣ What is the difference between WHERE and HAVING clauses in SQL?
2️⃣ Explain the difference between INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN.
3️⃣ What are Primary Keys and Foreig…
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29 Sept 2026, 21:36 UTC≈1,010 views5 reactionsread 6 October 2026 🚀 Excel Formulas Fundamentals — Part 10
📊 Conditional Functions (SUMIF, SUMIFS, COUNTIF, COUNTIFS, AVERAGEIF, AVERAGEIFS, SUMPRODUCT)
Conditional functions allow you to calculate, count, or average data based on one or more conditions. They are among the most commonly used functions by Data Analysts, Financial Analysts, and Business Analysts.
📌 These functions are frequently asked in Excel interviews and used in b…
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29 Sept 2026, 15:40 UTC745 viewsread 6 October 2026 Photo
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29 Sept 2026, 06:59 UTC810 views5 reactionsread 6 October 2026 📊 Tableau Learning Roadmap — Part 2
Connecting to Data
Before creating visualizations in Tableau, you need to connect Tableau to a data source. Tableau can work with data stored in files, databases, cloud platforms, and other supported sources.
1. Excel
Tableau can connect directly to Excel files such as:
Sales_Data.xlsx
For example:
Order Date | Product | Region | Sales
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28 Sept 2026, 20:48 UTC472 viewsread 6 October 2026 📊 Tableau Learning Roadmap — Part 1
What is Tableau?
Tableau is a Business Intelligence and data visualization platform used to connect to data, analyze it, and create interactive visualizations and dashboards.
Instead of looking at thousands of rows in a spreadsheet, Tableau helps you turn that data into charts, dashboards, and insights that are easier to understand.
Example
Suppose a company has sales data con…
28 Sept 2026, 20:48 UTC525 views2 reactionsread 6 October 2026 This is useful when you want to guide someone through an analytical narrative.
The Tableau Interface
When you open Tableau Desktop, several important areas appear.
Rows
Controls what appears along the vertical axis of the visualization.
Columns
Controls what appears along the horizontal axis.
Marks Card
One of the most important areas in Tableau.
You can control:
• Color
• Size
• Label
• Detail
• Toolti…
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28 Sept 2026, 16:19 UTC557 viewsread 6 October 2026 Photo
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27 Sept 2026, 19:56 UTC799 views2 reactionsread 6 October 2026 Complete Data Analytics Mastery: From Basics to Advanced 🚀
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26 Sept 2026, 21:51 UTC808 views2 reactionsread 6 October 2026 Data Analytics Interview Questions with Answers
1. What are Query and Query language?
A query is nothing but a request sent to a database to retrieve data or information. The required data can be retrieved from a table or many tables in the database.
Query languages use various types of queries to retrieve data from databases. SQL, Datalog, and AQL are a few examples of query languages; however, SQL is known to be…
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26 Sept 2026, 11:03 UTC778 views1 reactionsread 6 October 2026 Photo
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24 Sept 2026, 19:09 UTC995 views2 reactionsread 6 October 2026 Video
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