Data Management
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data_quality_dimension:accuracy
Accuracy
Definition
Accuracy of a data value is the degree of closeness of data values to real values.
Relation
| Accuracy | is a characteristic of a | data value |
| Accuracy | is an instance of a | data quality dimension |
Note
Accuracy can be determined, by comparing data in your database with a real-world measurement. For example, you could call a customer and ask if his email address is still john@mail.com. If you draw a sample from your database, you can make statements about the accuracy of all the data in the database.
Examples
Wrong name
| Name |
|---|
| Jansen |
The name should be written as Janssen with double 's'.
Old adress
| Employee name | Place of living |
|---|---|
| John Steward | Washington |
John has moved meanwhile to New York.
Wrong unit of measure
| Product name | Weight in gram |
|---|---|
| Pack of suger | 1 |
Weight should be 1000 (gram) instead of 1 (kilogram).
Reference(s)
DAMA NL (2020). Dimensions of Data Quality (DDQ). Research paper. https://www.dama-nl.org/wp-content/uploads/2020/09/DDQ-Dimensions-of-Data-Quality-Research-Paper-version-1.2-d.d.-3-Sept-2020.pdf
data_quality_dimension/accuracy.txt · Last modified: 2024/03/08 13:33 (external edit)