Welcome to the Onyx Data September 2025 Challenge!

About ZoomCharts Mini Challenge

🏆 Main Prize: $300 Amazon Gift Card

ZoomCharts Mini Challenge is part of the global DataDNA – Dataset Challenge by Onyx Data, which unites 25K+ data enthusiasts worldwide, ranging from beginners to seasoned professionals, including Microsoft MVPs. Read more about the DataDNA challenge on the Onyx Data DataDNA website. Join the community on LinkedIn.

Why join ZoomCharts Mini Challenge?

1. Workshops & 1:1 Mentoring: Learn directly from experienced Power BI professionals through live workshops on report-building best practices, 1:1 mentoring sessions to review your report and get tailored advice.
2. Get Personal Feedback: Every participant receives detailed, personalized feedback on their report - a great opportunity to improve based on real input from seasoned analysts.
3. Free ZoomCharts PRO License: All participants get a ZoomCharts Developer License (worth hundreds of dollars) that gives full access to the Drill Down PRO visuals library.

🏆 Prize: 

The creator of the best report submitted to the Mini Challenge will receive a $300 Amazon gift card. The ZoomCharts winner will be announced in a special live webinar session on September 26, where we will review the Top 5 entries from the challenge.

Webinars

Learn more about ZoomCharts visuals & gain a knowledge advantage in the contest by joining the upcoming webinars! You'll also get the chance to your ask questions and get expert answers in the Q&A section.

Upcoming webinars

Workshop on Using Power BI for Credit Risk Analytics in Banking

16th September, 2025

08:00 AM - EDT

Join our Power BI workshop on Credit Risk Analytics in Banking. Learn how to analyze loan data, identify risk factors, and build interactive dashboards with ZoomCharts visuals.

Learn more

Top 5 Power BI Reports for Credit Risk Analytics in Banking

26th September, 2025

08:00 AM - EDT

Join us as we showcase the Top 5 Power BI dashboards from the Credit Risk Analytics Challenge. Special guest Nikola Ilic, Founder at DataMozart and Microsoft MVP, will share feedback and insights in a lively conversation.

Learn more

Credit Risk Analytics Challenge

In this challenge, you’ll act as a credit risk analyst at Nova Bank, a financial institution that provides personal, medical, education, and business loans across the USA, UK, and Canada. Nova Bank wants to make lending fair and accessible while also protecting itself from unnecessary risk.

The main challenge is finding the right balance. If Nova Bank approves too many high-risk loans, it loses money. If it becomes too strict, it misses out on potential customers. By looking at the data, your job is to help the bank understand who tends to default and why, and how lending decisions can be made more reliable.

What You’ll Do

Use the dataset to build a short analysis or dashboard that helps Nova Bank:

• See which groups of borrowers are more or less likely to default

• Identify the factors that matter most when predicting loan outcomes

• Explore how loan size, income, interest rates, and repayment terms affect risk

• Spot early signs of financial trouble so action can be taken sooner

• Suggest ways the bank can adjust lending policies to be both safer and fairer

Questions to Explore

• Which types of borrowers are more likely to default?

• Do certain loan purposes (education, medical, personal, debt consolidation) carry more risk?

• How do loan-to-income and debt-to-income ratios relate to repayment?

• Does employment type or home ownership make a difference?

• How do past defaults or longer credit histories affect loan outcomes?

• Are there clear differences between borrowers in the USA, UK, and Canada?

• Which loan grades or terms seem safer, and which are riskier?

• Can groups of borrowers be identified that look “safe” versus “risky”?

✨ Note: These questions are just starting points. You’re encouraged to explore the data in your own way and share any unexpected findings that could help Nova Bank lend more responsibly.

Dataset

My license

1:1 mentoring sessions

You can book a personal session with Senior Product Expert at ZoomCharts, Aivis Pavlovs, to gain practical knowledge about Drill Down Visuals and how they can be used to enhance data storytelling in a report.