Verifying the Exchange Rate Pulse forecast lane

Field notes

The regression uses only the visible window of demo data and re-computes whenever the viewer changes the range. It keeps the math approachable and prevents claims about predictive accuracy.

I clamp the projection to business hours so the dashboard never shows overnight gaps that the sample feed can’t verify. If the regression cannot produce a stable slope, the ribbon hides and the copy explains why.

Most importantly, the surrounding paragraphs remind visitors that this is a UX demonstration. When you connect a real feed, you can swap in a more advanced model without changing the UI contract.

Key takeaways

Copy these into your own playbooks or PRDs—the bullet points summarize the decisions the article supports.

• Keep demo math transparent—reviewers should understand it without digging into code.
• Disable the feature when the underlying data does not support it.
• Document how clients can replace the demo logic with their own models.