Introduction of the term data cleaning

Question

Give a brief introduction of the term data cleaning?

Answer 1

Data cleaning is the procedure of discovering erroneous data. The data is verified for consistency, accuracy, types and so forth.

Techniques:-

• Parsing - employed to perceive syntax errors.
• Data Transformation – Make sure that the input data matches in format with predicted data.
• Duplicate elimination - This procedure gets free of duplicate entries.
• Statistical Methods- standard deviation, values of mean, range, or clustering algorithms and so forth are employed to get erroneous data.