=====Accuracy=====

===Definition===
Accuracy of a data value is the degree of closeness of [[data_concept:data_value|data values]] to [[data_concept:real_value|real values]]. 

===Relation===
|Accuracy|is a [[general_term:characteristic|characteristic]] of a |[[data_concept:data_value|data value]]|
|Accuracy|is an instance of a|[[data_quality_general/data_quality_dimension|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


{{tag>All DataQualityDimension}}