Duplicate Data
Explore the causes and impacts of duplicate data in datasets. Understand why duplicates harm data quality and learn practical Python techniques to detect and resolve them, ensuring accurate and reliable analysis.
We'll cover the following...
We'll cover the following...
Introduction
Duplicate data is data that exists as a copy of already existing data. In a dataset, duplicate data could mean two or more similar records exist. When analyzing data, we must work with data that doesn’t have duplicate records. This is because reports generated from such data will not be accurate and reliable because they would relay incorrect insights about the subject in question.
Origins of duplicate data
Duplicate data may occur when we merge data from different sources that collect similar information. For example, a table designed to collect ...