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Welcome to the Onyx Data July 2025 Challenge!

Jul 01 - Jul 31, 2025 | EDT

Analyze and visualize customer satisfaction trends for a retail company using Power BI. Uncover insights to guide leadership in improving retention, loyalty, and the overall customer experience.

Submission deadline

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Register to the DataDNA ZoomCharts Mini Challenge!



Activate your Drill Down visuals Developer License!

You can use these credentials to access ZoomCharts visuals and create your report for this ZoomCharts Mini Challenge, or for your personal training purposes


Ready to submit your report for review?

Thank you! Your report has been submitted!

Submitted:

Your report will undergo validation. Once the validation of your report is complete, we will send you a Power BI Publish to Web link that you can share publicly.

Confirmed your submission fits the criteria:

Reviewed:

Rejection reason:

Sorry, we are no longer accepting entries for this competition. Stay tuned for future events!

Something went wrong, please contact support!

Timeline

Registration Open

Registration Open

01 July | 04:00

-

Submissions Open

Submissions Open

01 July | 04:00

-

Workshop | Power BI Workshop: Building Customer Satisfaction and Loyalty Reports

Workshop | Power BI Workshop: Building Customer Satisfaction and Loyalty Reports

03 July | 08:00

-

1:1 Mentoring Sessions

1:1 Mentoring Sessions

03 July | 08:00

01 July - 24 July

Entry Submission Deadline

Entry Submission Deadline

24 July | 17:59

01 July - 24 July

Webinar | Top Power BI Reports for Customer Satisfaction Analytics

Webinar | Top Power BI Reports for Customer Satisfaction Analytics

29 July | 08:00

01 July - 24 July

Winner Announced

Winner Announced

29 July | 08:00

01 July - 24 July

Dataset

Get the dataset

Share the challenge

About challenge
How to participate
The Brief
Judging criteria
Timeline
Dataset
My license
Mentoring

About ZoomCharts Mini Challenge

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

The ZoomCharts Mini Challenge provides additional benefits and a platform for a growing community to learn how to build PRO reports, helping business users explore data quickly and intuitively, including:

  1. Free License: All participants receive a free ZoomCharts Developer License that gives access to the full Drill Down PRO visuals library. License will remain active for 1 year after the challenge.
  2. Learn from Experienced Professionals: As part of the challenge, we host live workshops on report building and visualizing the challenge’s dataset in Power BI. Challenge participants can also book an individual consultation with an experienced Power BI mentor to ask questions and get personalized tips.
  3. Tailored Feedback: Every challenge submission will receive personalized feedback, giving participants the chance to hone their skills and improve their reports.

Prizes

The creator of the best report submitted to the Mini Challenge will receive a $300 Amazon gift card from ZoomCharts.

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

Recording thumbnail

Power BI Workshop: Building Customer Satisfaction and Loyalty Reports

3rd July, 2025

08:00 AM - EDT

Learn how to build Power BI dashboards using real-world customer satisfaction data.

Learn more
Recording thumbnail

Top Power BI Reports for Customer Satisfaction Analytics

29th July, 2025

08:00 AM - EDT

Explore top Power BI dashboards from a customer satisfaction analytics challenge. Discover winning techniques and actionable report designs.

Learn more

How to participate in Onyx Data DataDNA & ZoomCharts Mini Challenge? 

1. Register for the challenge: 

  • Register for DataDNA ZoomCharts Mini Challenge using the form above ⬆️
  • Activate your free Drill Down Visuals Developer License for Power BI. Read license setup instructions.
  • Download Challenge dataset from Onyx Data DataDNA Main Challenge website.

2. Build your report in Power BI: 

  • Set up an account in Power BI using the assigned license details (if you have participated in ZoomCharts Challenges in the past, you can use the same account you set up before).
  • Use the account to access the full library of custom ZoomCharts Drill Down visuals. 
  • Use the dataset to build a Power BI report including at least 2 ZoomCharts Drill Down Visuals in one report page. 

3. Improve your report and learn new skills: 

  • To learn more about applying ZoomCharts visuals in your reports, participate in the challenge workshop. 
  • If you have any questions or need advice, you can book a free individual consultation here.
  • Check out the submissions from past challenges for inspiration. 

4. Submit your challenge entry: 

  • Submit your report in .pbix format for validation using the form on this page.

If your submission doesn’t match the challenge criteria, you will be notified by email indicating the reason. Don't worry if this happens! You can fix the issue and resubmit your report. 

  • Your report will be reviewed within 1–2 business days. Once it’s validated, you’ll receive a Publish to Web link via email. You can use this link to add the report to your portfolio or share it publicly online.
  • All validated entries will also receive personalized feedback from the evaluation team via email within 1-2 business days. Use this feedback to revise your report and resubmit it before the deadline.

Note: Feel free to resubmit your entry as many times as necessary before the deadline.

5. Finalize your participation to compete for the prize

  • Post the final version of your submission as a single image on your LinkedIn profile, including the tags @ZoomCharts and @OnyxData, as well as the hashtags #dataDNA and #builtwithzoomcharts.
  • After posting the report on LinkedIn, please submit it to the Onyx Data DataDNA Main Challenge
  • Follow ZoomCharts on LinkedIn 
  • Follow Onyx Data on LinkedIn 
  • All participants of ZoomCharts Mini Challenge need to submit reports main Onyx Data DataDNA challenge for a chance to win additional prizes.

6. Attend challenge closing webinar to hear the results: 

  • The submissions are evaluated by ZoomCharts team (see "Judging criteria" for more info). The submissions of Top 5 ZoomCharts Mini Challenge finalists are analyzed live during the challenge closing webinar to share the best practices and learning opportunities with the community.
  • The author of the best report is rewarded with a $300 Amazon gift card from ZoomCharts. 

Technical requirements:

  • Build your report using only Power BI
  • The number of pages in the report is not limited
  • At least one report page has to contain a minimum of 2 ZoomCharts Drill Down Visuals. See a practical guide on Drill Down Visuals here

 

The Brief:

Customer Satisfaction and Loyalty Analytics Challenge

Step into the role of a data analyst at OmniRetail, a U.S. retail chain selling electronics and smart home products through both online and physical stores. To improve customer satisfaction and retention, the company has collected feedback throughout 2024.

You’ve been provided with a customer satisfaction dataset combining satisfaction scores, purchasing behavior, demographics, support history, and location data.

 

Your mission is to create an analytical report that identifies the key factors influencing customer satisfaction and loyalty across different regions, customer demographics, and support experiences.

 

Key questions to guide your analysis:

  • What are the main factors contributing to high vs. low satisfaction scores?
  • Are certain customer segments (by age, gender, group) more loyal than others?
  • Which locations (cities or states) report consistently high or low satisfaction scores?
  • Does contacting customer support negatively impact satisfaction?
  • How do factors like “Price” or “Product Variety” influence customer loyalty?
  • Do repeat purchasers report higher satisfaction compared to one-time buyers?
  • Are there regional clusters of highly loyal or dissatisfied customers based on location data?
  • What is the relationship between loyalty level and satisfaction score?
  • Do specific demographic groups favor certain satisfaction factors (e.g., Packaging vs. Price)?

Use these questions as a springboard - don’t hesitate to explore deeper relationships. Your insights could help reshape the customer experience strategy for the brand.

Dataset Overview:

Column Name

Description

Customer_ID

Unique customer identifier (for internal use only)

Group

Customer classification: A, B, or C • Group A: High-frequency shoppers • Group B: Moderate-frequency • Group C: New or low-frequency

Satisfaction_Score

Customer’s rating of their experience (1 = very poor, 10 = excellent)

Age and Gender

Demographic attributes

Location

City and State (e.g., Austin.TX), with Latitude and Longitude for geographic mapping

Purchase_History

Indicates if the customer has made purchases (Yes/No)

Support_Contacted

Whether the customer interacted with support

Loyalty_Level

OmniRetail’s internal rating: Low / Medium / High loyalty

Satisfaction_Factor

The main reason influencing the satisfaction score (e.g., Price, Product Variety, Packaging)

 

 

Technical requirements

  • Build your report using only Power BI
  • The number of pages in the report is not limited
  • At least one report page has to contain a minimum of 2 ZoomCharts Drill Down Visuals. See a practical guide on Drill Down Visuals here

 

Judging criteria

Each report is evaluated based on three main criteria: intuitiveness, insightfulness, and interactivity. These factors ensure that the reports are not only accurate and functional, but also meet the target audience's needs and are ready to be presented to the end-users. 

  1. Intuitive: How clear and easy it is to understand the report at a glance? (max 15 points)
    • Is the report visually appealing?
    • Choice of charts and visual elements
    • Does the report tell a story?
    • Is it not overwhelming to the user?
    • Choice of tooltips, titles, and legends

  2. Interactive: How engaging and seamless is the report exploration and interaction with data? (max 15 points)
    • Clear navigation that allows user to explore the report
    • Use of slicers and other interactive elements
    • Smooth cross-chart integration
    • Is report optimized for touch devices?
    • Are tutorials and guiding elements helpful to the user?

  3. Insightful: How accurate, complete, and meaningful is the data in driving decisions? (max 15 points)
    • Depth of analysis
    • Data cleaning and preparation
    • Does data show up accurately in the report?
    • Is report optimized for quicker loading time?
    • Does the report provide deeper exploration of data (drill-down)?

Timeline

Registration Open

Registration Open

01 July | 04:00

-

Submissions Open

Submissions Open

01 July | 04:00

-

Workshop | Power BI Workshop: Building Customer Satisfaction and Loyalty Reports

Workshop | Power BI Workshop: Building Customer Satisfaction and Loyalty Reports

03 July | 08:00

-

1:1 Mentoring Sessions

1:1 Mentoring Sessions

03 July | 08:00

01 July - 24 July

Entry Submission Deadline

Entry Submission Deadline

24 July | 17:59

01 July - 24 July

Webinar | Top Power BI Reports for Customer Satisfaction Analytics

Webinar | Top Power BI Reports for Customer Satisfaction Analytics

29 July | 08:00

01 July - 24 July

Winner Announced

Winner Announced

29 July | 08:00

01 July - 24 July

Dataset

Get the 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.

Book a meeting

Your Drill Down Visuals Developers License

Use the email and password provided below to log in Power BI Desktop and access an account with a license to use all ZoomCharts Drill Down Visuals.

Upon logging in, you will need to change your password and enable two-factor authentication. If you encounter any problems, feel free to reach out to us via chat. For more information click here.

*This Developer License can be used to create a report for this ZoomCharts Mini Challenge or for your personal training purposes. Commercial use of this license is prohibited.

Submit your report to the DataDNA ZoomCharts Mini Challenge!

Enter your submission by attaching the Power BI report file. Your report will be published on the web, and we will e-mail you a link to your report that you can share publicly.

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You can use these credential to access ZoomCharts visuals and create your report for this ZoomCharts Mini Challenge, or for your personal training purposes.


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