Explanation

Duplicate records can produce incorrect reports and analysis. Excel’s Remove Duplicates tool helps identify and remove repeated records.

Key Concepts

  • Identify duplicate records
  • Remove duplicates
  • Select specific columns
  • Compare records before deleting
  • Backup original data

Example

If Order ID O105 appears twice, use:

Data → Remove Duplicates → Select Order ID → OK

Practice

Clean the business dataset and remove duplicate Order IDs.

PreviousNext