SI Analytics
Day 01 of 10 · Foundation · Global health

The World Is Living Longer. But Who Is Being Left Behind?

A clean, country-year view of life expectancy at birth.

Saturday, October 24, 2026Platform-neutralHealth · Development · Business Intelligence

Your analytical mission

How has life expectancy changed, and which gaps remain?

This is a storytelling challenge, not a test of how many visuals you can create. Investigate the central question, choose evidence that answers it, and explain why the findings matter.

Step-by-step instructions

  1. Select five to eight countries using a defensible geographic rationale.
  2. Plot life expectancy over a common, clearly labeled period.
  3. Rank the selected countries for their most recent common year.
  4. Write a headline that expresses a finding, not simply the chart topic.

Scope and data preparation

Use a fixed 2000–2023 window if data are available for all selected countries.

Expected deliverables

  1. One line chart and one ranked bar chart.
  2. 100–150-word interpretation with a quantified finding and one caveat.
  3. Source citation and a screenshot, HTML page, or dashboard link.

Label charts clearly and cite the dataset and extraction date. Tell us which tool you used.

Quality guardrail

Do not mix regional aggregates with countries or confuse life expectancy at birth with age at death.

Required story structure

Question → Evidence → Interpretation → Action. Include a concise evidence-led title and a limitation where relevant.

Dataset and provenance

Our World in Data: Life expectancy

Official source and download instructions. The source may contain more rows or fields than this day's suggested scope.

Open official data source ↗

Direct CSV download from the provider ↗

Source: Our World in Data: Life expectancy. Original data may have licensing, citation, coverage and refresh requirements. Confirm the dataset version before publishing.

Submission checklist

Submit the completed dashboard/chart or report link, a fallback screenshot or PDF, your 100–300-word findings (depending on the day), your source citation, and a brief methodological limitation. Share publicly only if you have appropriate permissions.

Suggested LinkedIn tag: #SIAnalyticsDataVizChallenge. Mention the day and one evidence-based finding.

Submission link: To be announced by SI Analytics.

Public data are credited to their original providers. SI Analytics challenge instructions are independent educational materials.

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