Introduction Exploratory Data Analysis (EDA) is a critical first step in understanding any dataset before modeling or drawing insights. This analysis focuses on a car insurance dataset. Key attributes such as car manufacturer, engine size, number of cylinders, and performance metrics are analysed to uncover patterns and relationships that influence insurance risk. Through systematic data…
This guide uses a superstore dataset, containing sales records, profits, shipping details, and customer information, to demonstrate how to build a powerful dashboard. By following a structured approach to data loading, transformation, and visualisation, you can generate meaningful insights that drive informed decision-making. If you’re new to Power BI, check out this article covering the…
Introduction Insights can be communicated through written reports, visualisation reports, or dashboards. Visualisations are key in data analysis, and it’s common to see the terms “reports” and “dashboards” used interchangeably, even though they serve different purposes. Reports vs. Dashboards Reports provide detailed, static data, often with a focus on historical or specific information. They are…
Introduction This guide provides a comprehensive walkthrough for installing Microsoft SQL Server on Windows operating system. It covers the necessary steps to set up SQL Server, install SQL Server Database Management Studio (DBMS), and configure popular sample databases such as AdventureWorks and WideWorldImporters. Although the procedures outlined are tailored for the 2019 version, they are…
Introduction Power BI is a powerful business analytics tool by Microsoft that allows users to visualise data, share insights, and make data-driven decisions. Whether you’re new to Power BI or need a refresher on how to get started, this guide will walk you through the installation process and provide tips for getting the most out…
Introduction Power Query is a powerful data connection technology that allows you to discover, connect, combine, and refine data across a wide variety of sources. This guide will provide a detailed step-by-step process on how to transform data using Power Query in Power BI. By following these instructions, you’ll be able to handle data more…
Introduction Creating effective Power BI dashboards starts with properly prepared data. This guide provides a step-by-step approach to preparing data for visualisation in Power BI, using a sample Excel dataset. By following these instructions, beginners can transform raw data into meaningful insights that are ready for analysis and presentation. Please check out the lessons below…
Introduction This guide walks you through the process of creating a spending trend dashboard using Power BI. This approach will provide you with a comprehensive view of spending patterns over time, enabling better financial management and strategic planning. The full video for this step-by-step approach is provided below:
We have explored Structured Query Language (SQL) problems in real-world business scenarios using single table queries in a previous post which can be accessed here. We will now focus on scenarios by using multiple table queries albeit still within a typical retail business. If you’re new to SQL and haven’t learned how to install SQL…
Introduction In this module, we will explore how to use Structured Query Language (SQL) to solve problems in real-world business scenarios. The questions and their solutions will involve querying single tables, requiring only a basic understanding of SQL commands. We will focus on business scenarios related to human resources (HR) and product orders within a…
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