Tidy Data: Structuring Spreadsheets for Analysis

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About Course

Most time in data analysis goes on cleaning and reshaping data. Learn the three rules of tidy data, how to recognise and fix common messy layouts, how to reshape between wide and long formats, and how UK government guidance on publishing spreadsheets helps make data both human-friendly and machine-readable.

Tutwoo is an independent learning provider. This course is written from the official documentation and guidance listed in the sources, which can change, so always check the current version. It is not endorsed by any of the organisations listed and is not an accredited qualification.

© 2026 Tutwoo UK Limited. This course was created in-house by Tutwoo and is our original work. It is for your own learning only: please do not copy, share, record or resell it.

What Will You Learn?

  • Apply the three rules of tidy data
  • Spot common messy layouts such as values in column headers and merged cells
  • Reshape data between wide and long formats in Excel, R or Python
  • Publish spreadsheets that are accessible and machine-readable

Course Content

Course Lessons

  • The three rules of tidy data
  • Recognising messy data
  • Reshaping: wide to long and back
  • Publishing data well: UK government guidance

Sources & Further Reading
The official guidance this course is based on.

Final Assessment

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