ENTDECKEN


2,2
2,2
67%
$65 USD / Stunde
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Germany (7:01 PM)
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Joined on September 28, 2025
$65 USD / Stunde
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I build Excel models, BI tools and automated data workflows that explain why your numbers behave the way they do. Most dashboards show results. I focus on performance drivers, decision logic and reproducible calculations behind them. With a background in Industrial Engineering, Psychology and Lean Six Sigma Black Belt, combined with advanced training in Data Science, Statistical Inference and Python, I bring together: • Business Intelligence & KPI analysis • Statistical analysis & hypothesis testing • Process & root cause analysis • Excel/VBA model building & automation • Python-based data workflows What I typically build • Decision models & calculators (pricing, risk, capacity, forecasting) • Advanced Excel workbooks with structured logic & clean formulas • KPI & performance driver analysis (what actually drives results?) • Statistical evaluations (A/B tests, significance testing, variance analysis) • Automated data pipelines (Excel, Power Query, Python) • Operational dashboards with analytical depth (not just visuals) My approach I don’t just deliver files — I build tools you can use long-term: • Clean, structured and documented models • Transparent formulas & logic (fully adjustable by you) • Reproducible data workflows • Clear interpretation of results (not just charts) • Short executive summaries: what the data says — and what it doesn’t Typical results for clients • Better pricing and margin decisions • Clear understanding of performance changes • Reduced manual work through automation • Reliable decision tools instead of ad-hoc spreadsheets • More confidence in business decisions based on data Working with me • Structured communication & clear milestones • Fast understanding of complex requirements • Strong focus on data quality and model logic • Reliable delivery and iterative refinement If you need an Excel model, calculator, BI tool or analytical workflow that actually supports decisions, feel free to reach out.
Überprüfungen
Pünktlich
100 %
Im Budget
100 %
Annahmequote
83 %

Excel Statistical Analysis Workbook

Excel Statistical Analysis Workbook

Excel Statistical Analysis Workbook

Life Expectancy vs. GDP | Analysis

Excel Statistical Analysis Workbook

Excel Statistical Analysis Workbook

Excel Statistical Analysis Workbook

Life Expectancy vs. GDP | Analysis
She communicate well, she may give you the cheap quote, But She will understand your project and what about the delivery of project . It will never happen. She will take your all the energy in understanding everything but can cancel your project at the time of delivery day rather communicating a problem and solution she will cancel it. It's total harrasment. Think about twice thrice before hiring
Neel S.
@nandmdezine
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Gurgaon, India
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I selected Ann-Christin for my project because of her Excel qualifications and skills. Her communication skills are excellent and she contributed to the project by asking questions like how I wanted the workbook to calculate and function. Ann-Christin was responsive and reliable in making changes to the workbook to ensure that it met all my performance requirements. I would be happy to collaborate with Ann-Christin again should the need arise. Thanks to Ann-Christin, I now have a robust and user friendly workbook.
Frank S.
@franks572
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Bonville, Australia
•
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Ann-Christin did a great job.
Robyn D.
@robyndwrite
•

Folkestone, France
•
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Erfahrung
BI & Statistical Performance Analyst
Sept., 2025 - Aktuell
•
5 Monate, 7 Tage
Self-Employed / Freelance
Sept., 2025 - Aktuell
•
5 Monate, 7 Tage
Freelance Business Intelligence & Data Analysis Excel & VBA Automation Projects Statistical Data Analysis & Reporting Dashboard & KPI Analysis for SMEs
Sept., 2025 - Aktuell
•
5 Monate, 7 Tage
Bildung
Fernuniversität Hagen
2012 - 2020
•
8 Jahre
B.Sc. Psychology

Germany
2012 - 2020
•
8 Jahre
Hochschule der Medien Stuttgart
2005 - 2009
•
4 Jahre
B.Sc. Industrial Engineering

Germany
2005 - 2009
•
4 Jahre
Qualifikationen
Master Statistics with Python
2026
Codecademy
Skill Path
2026
Data Scientist: Inference Specialist
2026
Codecademy
Career Path
2026
Data and Programming Foundations for AI
2026
Codecademy
Skill Path
2026
Zertifizierungen
SQL
US English
Data Entry
Python
AI Training - Freelancer Global Fleet