Retail Sales Analysis
Explore sales trends, product performance, and opportunities for improvement.
View case study →DERK SERVICES · DATA ANALYTICS
Turn your data
into better
decisions.
I help businesses clean, analyze, visualize, and understand their data so important patterns become clear and decisions can be based on evidence.
Data Analysis
Data AnalysisClean, transform, and analyze data to find patterns, trends, and actionable insights.
Visualization
VisualizationTurn data into clear visual stories that make important findings easier to understand.
SQL
SQLQuery, join, filter, and aggregate data efficiently from relational databases.
Power BI
Power BIBuild interactive dashboards and reports that help track performance and decisions.
Excel
ExcelAnalyze and organize data using formulas, PivotTables, charts, and automation.
Python
PythonAutomate data tasks, analyze datasets, and build custom analytical solutions.
Data
tells a story.
Let’s make
sense of yours.
tells a story.
Let’s make
sense of yours.
From Data
to Real ImpactCLEAN · ANALYZE · VISUALIZE
to Real ImpactCLEAN · ANALYZE · VISUALIZE
THE PROBLEM
Your business already has data.
The hard part is knowing what it means.
When information is scattered across spreadsheets and reports, useful signals can disappear inside the noise. Good analysis makes the important story easier to see.
Too much data
Important patterns can get buried in large files and reports.
Inconsistent information
Different formats and sources can make reliable analysis harder.
No clear picture
Numbers are more useful when trends and KPIs are easy to understand.
Need better decisions
Evidence gives business decisions a stronger foundation.
WHAT I DO
From raw data to useful insight.
Practical analysis focused on the question behind the numbers—not just the tools used to answer it.
01
Data Analysis
Explore trends, patterns, performance, anomalies, and opportunities.
02
Data Cleaning
Turn messy source data into a consistent, analysis-ready dataset.
03
SQL & Database Analysis
Query, join, aggregate, and calculate meaningful business metrics.
04
Dashboards & BI
Build practical dashboards that make performance easier to monitor.
05
Reporting & Visualization
Present findings in clear visuals and reports people can actually use.
06
Statistical Analysis
Use appropriate statistical methods to investigate relationships and patterns.
HOW IT WORKS
A clear path from question to insight.
01
Understand
Define the business question and desired outcome.
02
Prepare
Collect, validate, clean, and structure the data.
03
Analyze
Find patterns, relationships, trends, and anomalies.
04
Visualize
Make the findings easy to understand and explore.
05
Recommend
Explain what the findings mean and what to consider next.
PROJECTS
Show the thinking, not just the screenshot.
Each case study should connect the business question, data, analysis, findings, and recommendation.
Fraud & Anomaly Analysis
Identify unusual transactions and explain the patterns that stand out.
View case study →Performance Dashboard
Translate operational or sales metrics into a practical decision-making view.
View case study →ABOUT DERK SERVICES
Analytical thinking, explained clearly.
I’m building Derk Services around a simple idea: data becomes valuable when it helps people understand a problem and decide what to do next.
My approach emphasizes careful preparation, logical analysis, clear visualization, and honest interpretation. The goal is not to show off a tool—it is to make the information useful.
IBM Data AnalystGoogle Data AnalyticsSQLPythonPower BI
LET’S TALK ABOUT THE DATA
Have data but don’t know what it’s telling you?
Tell me what you are trying to understand. We can start with the business question and determine what the data can answer.
