9 Common Data Quality Problems and How to Fix Them in 2026
Understanding how to spot and fix these issues can save hours of troubleshooting — and help analysts build trust in their insights. Data formatting determines how values are structured,...

Tidy Data

What are some common challenges with formatting data in spreadsheets and how can we avoid them? Recognise and resolve common spreadsheet formatting problems. This episode is used as a reference for discussion as learners identify issues with the messy dataset discussed in the previous episode.

Furthermore, visual representations like the one above help us fully grasp the concept of Correct Output Data Format Issues.
How to Handle Incorrectly Formatted Data in Data Science
Learn some tips and techniques to deal with incorrectly formatted data during the data cleaning process. Find out how to identify, fix, validate, document, and test the format errors in...
More Context About Correct Output Data Format Issues
Formatting in Excel (Examples) | How to Format Data in Excel?. This note connects the source idea with the visuals in a simple, reader-friendly way.
Export data format setting: use the system values · Issue #19811. It gives the article a little more context before the image collection begins.
Data File Formats for Fast Data Analytics with Spark and Python. It works as a short bridge between the article summary and the gallery section.
Looking at multiple sources also helps separate the main idea from small decorative details.
These notes are added so the page offers more than images and gives each visitor a clearer reason to keep reading.