CDS Data Quality Management 5

Question 1

Which metric expresses the proportion of records that pass all applicable data quality rules?

Accepted Answer

Data quality score (DQ score)

Answer

A DQ score (often expressed as a percentage) is calculated as the ratio of conforming records to total records across one or more quality dimensions.

Question 2

A healthcare organization must ensure that patient records are accurate, complete, and available within 30 minutes of a clinical event. Which framework element formally defines these requirements?

Accepted Answer

Data quality service level agreement (DQ SLA)

Answer

A Data Quality SLA formally specifies measurable quality targets (accuracy, completeness, latency) and the consequences of non-compliance for a given dataset.

Question 3

What distinguishes 'reactive' data quality management from 'proactive' data quality management?

Accepted Answer

Reactive DQ fixes defects after they occur; proactive DQ prevents defects from arising

Answer

Reactive DQ detects and corrects defects post-hoc, while proactive DQ redesigns processes, controls, and entry points to prevent defects from entering the data ecosystem.

Question 4

Which data quality concept refers to the degree to which data correctly represents the real-world construct it is intended to model?

Accepted Answer

Accuracy

Answer

Accuracy is the dimension that measures how faithfully data values reflect the true state of the real-world objects or events they represent.

Question 5

During a data migration project, what is the primary purpose of running data quality checks BEFORE migration begins?

Accepted Answer

To establish a baseline and prevent inheriting existing defects in the target system

Answer

Pre-migration DQ checks establish a baseline of existing defects and allow remediation before those defects are replicated and potentially amplified in the new target environment.

(CDS) Certified Data Steward Practice Test

(CDS) Certified Data Steward Practice Test

CDS Data Quality Management 5