JHK
Issued to
Jan-Herman Koller
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Credential Verification
Issue date: August 11, 2026
ID: 9ad9519a-b23c-4c5c-b431-e047949ec23d
Issued by
Data Booster
Type
Certification
Level
Foundational
Format
Online
Description
Holders can read the charts they meet daily; KPIs in context, bar charts for comparison, line charts for trends and seasonality and turn one into a single sentence that supports a decision. They can also spot a misleading chart: a truncated axis, a cherry-picked timeframe, or a comparison that is not like for like.
Skills
Reading data visualizations
Interpreting visualizations
Data Visualization
OKRs and KPIs
Data Storytelling