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Simplifying data for beginners

Data analysis made simple for beginners.

Hi, I'm Deborah Ajayi. I help beginners understand data analysis through practical projects, step-by-step tutorials, and real-world datasets.

Start your journey View projects
Excel dashboards and analysis
SQL querying data
Power BI business reports
Analytics dashboard on a laptop screen
Sales Performance Power BI
Beginner friendly

Learn with real datasets

Practice, build dashboards, understand insights, and explain your work clearly.

81% answer rate analyzed

Start your journey

A clear starting point for complete beginners.

Learn Data View Projects Practice Datasets Contact Me

Why I built this

Data becomes easier to understand when it is explained clearly.

I realized that many people struggle with data not because it is too difficult, but because it is often not explained in a simple, practical way.

Debbylytics is designed to make data learning clear, practical, and accessible for beginners, students, and anyone who wants to build confidence with data.

My Projects

Practical dashboards built to turn raw data into insight.

Excel + Power BI

Sales Data Analysis

A sales performance dashboard that analyzes revenue, profit, discounts, orders, and category trends to support better business decisions.

  • Technology generated the highest revenue and profit.
  • High discount rates were linked with lower profit margins.
  • Underperforming categories showed clear improvement opportunities.
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Power BI + Excel

Call Center Performance Analysis

A call center dashboard for evaluating service efficiency, customer satisfaction, call volume, agent performance, and resolution rates.

  • Answer rate was high at 81%, though some calls were still missed.
  • Resolution rate was strong at 89%.
  • Midday call peaks showed where staffing needed improvement.
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Excel + Power Query

Legendary Foreshore Project Performance

A real estate project dashboard analyzing budgets, actual costs, leads, conversions, delays, and location performance.

  • Compared budgeted costs with actual project costs.
  • Identified projects exceeding budget and experiencing delays.
  • Tracked lead conversion performance across locations.
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Power BI + Excel

Sprocket Central Sales Performance

A customer segmentation and acquisition dashboard focused on revenue, profit, customer value, industries, and sales strategy.

  • Mass Customers generated the highest profit among wealth segments.
  • Manufacturing and Financial Services performed strongly.
  • Partnered insights with customer acquisition strategy.
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Power BI + Excel

Superstore Sales Performance

A dashboard analyzing sales, profit, return rate, regional profit, returned orders, and loss-making products.

  • Total sales exceeded $1 million.
  • Profit margin was 12.05%.
  • Return behavior highlighted product-level improvement areas.
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MySQL Workbench + SQL

Brewery Sales SQL Analysis

A SQL analysis project answering brewery sales questions about consumption, countries, sales representatives, and profit.

  • Used SELECT, WHERE, GROUP BY, ORDER BY, SUM, and LIMIT.
  • Identified high-consumption countries and regions.
  • Summarized profit and sales representative performance.
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Power BI + Excel

NexaTech Sales Analytics

A sales pipeline and strategic insights dashboard analyzing revenue, opportunities, channels, partners, products, and regions.

  • Partner channel generated stronger revenue than direct sales.
  • East was identified as the best performing region.
  • Talus was identified as the most profitable product.
View full project

Learn Data with Debby

Simple, practical, and structured learning for beginners.

Whether you are just starting or looking to improve your skills, this space gives you clear explanations, step-by-step guides, and practical resources to support your journey.

A learner studying data analysis on a laptop
01

Understand data analysis

Learn what data analysis means and how analysts solve real problems.

02

Learn Excel

Build the foundation for cleaning, exploring, and presenting data.

03

Learn SQL

Practice querying data and answering questions from databases.

04

Learn Power BI

Create visuals, dashboards, and reports that communicate insights.

Beginner roadmap

Follow the path one step at a time.

Step 1

Understand what data analysis is

Learn the purpose of data analysis and the kind of questions it answers.

Step 2

Learn Excel for analysis

Clean data, use formulas, summarize results, and build useful dashboards.

Step 3

Learn SQL and Power BI

Query data, create visuals, and present clear business insights.

Step 4

Practice with datasets

Use real datasets to build confidence and strengthen your portfolio.

Guided tutorials

Step-by-step lessons to help you apply what you learn.

Beginner Tutorial: Sales Data Analysis (Excel) Beginner Tutorial: Excel Dashboard Creation Power BI Basics for Beginners Beginner Tutorial: Power BI Dashboard SQL for Beginners (MySQL)

Practice datasets

Build your confidence by practicing independently.

Sales Dataset Practice Retail Sales Dataset Practice Real Estate Dataset Practice Call Center Dataset Practice

About Deborah Ajayi

From teaching Mathematics and Science to simplifying data.

Portrait of Deborah Ajayi, founder of Debbylytics
Deborah Ajayi, Founder of Debbylytics

My journey into data analysis started from my background in teaching Mathematics and Science. As a tutor, I learned how to break down complex ideas into simple, understandable steps.

Over time, I transitioned into data analysis and developed skills in Excel, SQL, Python, and Power BI to solve real-world problems.

Through internship experience and professional certifications, I worked on real data projects that strengthened my ability to analyze, interpret, and present data clearly. That experience led me to create Debbylytics: a platform where data is simplified, practical, and accessible for beginners.

Contact Me

Want to learn, collaborate, or work with me?

I offer data analysis support, Excel and Power BI dashboard creation, beginner data tutoring, and project guidance.

Email ajayideborah5@gmail.com Brand Email Debbylytics@gmail.com Phone +234 810 318 3539 LinkedIn Deborah Ajayi TikTok @layomid WhatsApp Chat with Deborah