Table 2 – Example of data quality metrics
From: Big data quality framework: a holistic approach to continuous quality management
DQD’s | Metric functions |
|---|---|
Completeness | Comp(%) =  NNMV*100/N: Number of non-missing values /N |
Consistency | Cons(%) =  NVRC*100/N: Number of values that respects constraints /N |
Accuracy | Acc(%) =  NCV*100/N: Number of correct values /N |
Uniqueness | Uniq(%) =  NDV*100/N: Number of distinct values /N |
N | Total number of observations (Rows) in dataset or sample |