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Retail Sales Performance Analysis

Project Summary

This project analyzes retail sales transactions to uncover product performance, regional sales trends, and customer purchasing behavior.

Using Excel, SQL Server, and Power BI, I transformed raw sales data into actionable business insights and developed an interactive dashboard for decision-making.


Power BI Dashboard

Power BI Dashboard

Project Overview

This project analyzes retail sales data using Excel, SQL Server, and Power BI.

The objective was to identify sales trends, top-performing products, regional performance, and customer purchasing patterns.

The project demonstrates the complete data analysis process from data exploration to dashboard development.


Tools Used

  • Microsoft Excel
  • SQL Server
  • Power BI

Dataset

The dataset contains retail sales transaction records with the following fields:

Column
OrderID
Customer_ID
Product
Region
OrderDate
Quantity
UnitPrice

A calculated revenue field was created:

TotalSales = Quantity × UnitPrice


Excel Dashboard

Excel Dashboard


Business Questions Answered

Excel Analysis

  • Total Sales by Product
  • Sales by Region
  • Monthly Sales Trend
  • Total Revenue
  • Total Orders
  • Average Revenue

SQL Analysis

  • Total Sales per Product
  • Number of Transactions by Region
  • Highest Selling Product
  • Revenue by Product
  • Monthly Sales Analysis
  • Top 5 Customers
  • Regional Revenue Contribution

Sample SQL Outputs

Top Customers

Top Customers

Monthly Sales

Monthly Sales

Revenue by Product

Revenue By Product

Highest Selling Product

Highest Selling Product


Project Files

Dataset

Located in:

Dataset/

SQL Scripts

Located in:

SQL Queries/

Power BI Dashboard File

Located in:

Power BI File/


Key Insights

  • Certain products generated significantly higher revenue than others.
  • Revenue performance varied across regions.
  • Monthly sales trends highlighted periods of stronger business performance.
  • Customer purchasing patterns helped identify high-value customers.

Technical Skills Demonstrated

  • Microsoft Excel

    • Pivot Tables
    • Data Cleaning
    • Revenue Analysis
  • SQL Server

    • Aggregations
    • GROUP BY
    • Sorting and Filtering
    • Business Query Development
  • Power BI

    • DAX Measures
    • KPI Cards
    • Interactive Dashboards
    • Data Visualization
  • Business Analysis

    • Sales Performance Analysis
    • Customer Analysis
    • Regional Performance Analysis

Author

Tolulope Glory Awoyemi

Data Analyst | Power BI Developer | Business Intelligence Analyst

GitHub: https://github.com/Simpletee17

LinkedIn: www.linkedin.com/in/tolulope-glory-awoyemi

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Sales Performance Analysis using Excel, SQL Server, and Power BI

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