Data Quality Assessment

Description: This quiz is designed to assess your knowledge of data quality assessment techniques and methodologies.
Number of Questions: 14
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Tags: data quality data assessment data analytics
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Which of the following is NOT a dimension of data quality?

  1. Accuracy

  2. Completeness

  3. Consistency

  4. Timeliness


Correct Option: D
Explanation:

Timeliness is not a dimension of data quality, but rather a measure of how up-to-date the data is.

What is the purpose of data profiling?

  1. To identify errors and inconsistencies in the data

  2. To summarize the data and identify patterns

  3. To clean and transform the data

  4. To load the data into a data warehouse


Correct Option: B
Explanation:

Data profiling is used to summarize the data and identify patterns, such as the distribution of values, the presence of outliers, and the relationships between different variables.

Which of the following is a common data quality assessment tool?

  1. Data profiling tools

  2. Data validation tools

  3. Data cleansing tools

  4. Data integration tools


Correct Option: A
Explanation:

Data profiling tools are commonly used to assess data quality by summarizing the data and identifying patterns.

What is the difference between data accuracy and data completeness?

  1. Accuracy refers to the correctness of the data, while completeness refers to the presence of all the necessary data.

  2. Accuracy refers to the consistency of the data, while completeness refers to the absence of errors.

  3. Accuracy refers to the timeliness of the data, while completeness refers to the relevance of the data.

  4. Accuracy refers to the validity of the data, while completeness refers to the reliability of the data.


Correct Option: A
Explanation:

Data accuracy refers to the correctness of the data, while data completeness refers to the presence of all the necessary data.

Which of the following is a common data quality assessment technique?

  1. Data profiling

  2. Data validation

  3. Data cleansing

  4. Data integration


Correct Option: A
Explanation:

Data profiling is a common data quality assessment technique used to summarize the data and identify patterns.

What is the purpose of data validation?

  1. To identify errors and inconsistencies in the data

  2. To summarize the data and identify patterns

  3. To clean and transform the data

  4. To load the data into a data warehouse


Correct Option: A
Explanation:

Data validation is used to identify errors and inconsistencies in the data.

Which of the following is a common data quality assessment metric?

  1. Accuracy

  2. Completeness

  3. Consistency

  4. Timeliness


Correct Option: A
Explanation:

Accuracy is a common data quality assessment metric that measures the correctness of the data.

What is the purpose of data cleansing?

  1. To identify errors and inconsistencies in the data

  2. To summarize the data and identify patterns

  3. To clean and transform the data

  4. To load the data into a data warehouse


Correct Option: C
Explanation:

Data cleansing is used to clean and transform the data to make it more consistent and accurate.

Which of the following is a common data quality assessment tool?

  1. Data profiling tools

  2. Data validation tools

  3. Data cleansing tools

  4. Data integration tools


Correct Option: B
Explanation:

Data validation tools are commonly used to assess data quality by identifying errors and inconsistencies in the data.

What is the difference between data consistency and data integrity?

  1. Consistency refers to the agreement between different sources of data, while integrity refers to the accuracy and completeness of the data.

  2. Consistency refers to the timeliness of the data, while integrity refers to the relevance of the data.

  3. Consistency refers to the validity of the data, while integrity refers to the reliability of the data.

  4. Consistency refers to the correctness of the data, while integrity refers to the presence of all the necessary data.


Correct Option: A
Explanation:

Data consistency refers to the agreement between different sources of data, while data integrity refers to the accuracy and completeness of the data.

Which of the following is a common data quality assessment technique?

  1. Data profiling

  2. Data validation

  3. Data cleansing

  4. Data integration


Correct Option: B
Explanation:

Data validation is a common data quality assessment technique used to identify errors and inconsistencies in the data.

What is the purpose of data integration?

  1. To identify errors and inconsistencies in the data

  2. To summarize the data and identify patterns

  3. To clean and transform the data

  4. To combine data from different sources


Correct Option: D
Explanation:

Data integration is used to combine data from different sources into a single, cohesive dataset.

Which of the following is a common data quality assessment tool?

  1. Data profiling tools

  2. Data validation tools

  3. Data cleansing tools

  4. Data integration tools


Correct Option: D
Explanation:

Data integration tools are commonly used to assess data quality by combining data from different sources into a single, cohesive dataset.

What is the difference between data quality and data governance?

  1. Data quality refers to the accuracy and completeness of the data, while data governance refers to the policies and procedures for managing data.

  2. Data quality refers to the timeliness of the data, while data governance refers to the relevance of the data.

  3. Data quality refers to the validity of the data, while data governance refers to the reliability of the data.

  4. Data quality refers to the consistency of the data, while data governance refers to the agreement between different sources of data.


Correct Option: A
Explanation:

Data quality refers to the accuracy and completeness of the data, while data governance refers to the policies and procedures for managing data.

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