Data Quality and Strategies Lecture 01 Quiz

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What is the primary definition of data quality?

The extent to which age of the data is appropriate for the task at hand
A characteristic or part of information for classifying information and data requirements
Fitness for use or meeting user needs (correct)
Identifying exact application of data for corresponding requirements

What are the two main classes of data quality problems identified in the text?

Management and Statistics
Single-source and Multi-source (correct)
Timeliness and Relevance
Medicine and Computer Science

What is the purpose of classifying data quality problems according to the text?

To measure and manage data quality as well as information
To identify different fields that address data quality issues
To illustrate standard data and identify exact application
To illustrate non-standard data and identify exact application (correct)

Which of the following is a data quality dimension?

Timeliness (B) Signup and view all the answers

What does the text state is critical for improvement process activity in different fields?

Quality of data (A) Signup and view all the answers

Which of the following is NOT mentioned as a definition of data quality?

Classifying information and data requirements (B) Signup and view all the answers

What is the primary purpose of data in an organization's operational, tactical and decision-making activities?

To identify related performance issues (B) Signup and view all the answers

Which of the following is NOT a data-driven technique for improving data quality?

Enhancing user experience (D) Signup and view all the answers

What is the main purpose of the process-driven strategy for improving data quality?

To redesign the process that produces or modifies the data to improve its quality (D) Signup and view all the answers

What is the primary difference between data-driven and process-driven techniques for improving data quality?

Data-driven techniques focus on modifying the data values directly, while process-driven techniques focus on redesigning the processes that produce or modify the data. (A) Signup and view all the answers

Which of the following is a technique used in the process-driven strategy for improving data quality?

Process control (C) Signup and view all the answers

Which of the following is an example of a process redesign technique used in the process-driven strategy for improving data quality?

Adding an activity to control the format of data before storage (A) Signup and view all the answers

What does completeness refer to in an information system?

The ability to represent every meaningful state of the real-world system (C) Signup and view all the answers

What is accessibility in terms of data quality?

How easily and quickly information can be retrieved (A) Signup and view all the answers

Which dimension of data quality focuses on the quality and documentation of data standards and models?

Data specification (B) Signup and view all the answers

What is consistent representation in terms of data quality?

The extent to which data is presented consistently (D) Signup and view all the answers

Which factor determines the reputation of information?

The extent to which information is highly regarded in terms of source or content (D) Signup and view all the answers

What does presentation quality measure in data quality?

The quality of how information is presented and collected (B) Signup and view all the answers

Which of the following is the main advantage of the Process-driven technique over the Data-driven technique?

Process-driven completely removes the root causes of quality problems. (D) Signup and view all the answers

What is the key difference between elementary data and aggregated data, as described in the text?

Elementary data represents atomic phenomena of the real world, while aggregated data does not. (A) Signup and view all the answers

Which type of data is collected from elementary data and involves the application of aggregation functions?

Aggregated data (C) Signup and view all the answers

Which of the following statements about the classification of data based on 'strictness to measure and to achieve data quality' is correct?

The two classes are 'elementary data' and 'aggregated data'. (B) Signup and view all the answers

Which of the following statements about the 'Data as a Product' model of data classification is correct?

It classifies data into three types. (C) Signup and view all the answers

How do Process-driven and Data-driven techniques compare in terms of cost and efficiency over the long run?

Process-driven is more expensive but more efficient in the long run. (A) Signup and view all the answers

What does timeliness refer to in the context of data quality?

The delay between a change in the real world and the corresponding update in the information system (D) Signup and view all the answers

What are the two components of timeliness mentioned in the text?

Currency and volatility (A) Signup and view all the answers

What is the definition of currency according to the text?

The degree to which a datum is up-to-date (D) Signup and view all the answers

Which of the following best describes volatility?

The time period for which information is valid in the real world (A) Signup and view all the answers

What is the definition of consistency according to the text?

The extent to which data is presented in the same format and compatible with previous data (C) Signup and view all the answers

How is accuracy defined in the context of data quality?

The extent to which data values correspond to real-world values (B) Signup and view all the answers