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What are the two main types of data?
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What is quantitative data?
Numerical data that can be measured and compared. Examples: age, height, weight.
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What is qualitative data?
Descriptive data that cannot be measured. Examples: opinions, emotions, perceptions.
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What is the difference between primary and secondary data?
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What are the four criteria for data quality?
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What does relevance refer to in data quality?
The extent to which the data is related to the research question.
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What does accuracy refer to in data quality?
The degree to which the data reflects true values of the variables.
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What does validity refer to in data quality?
The degree to which the data measures what it is supposed to measure.
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What does reliability refer to in data quality?
The consistency of the data over time and across different sources.
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What are the two methods of data collection?
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What is an example of manual active data collection?
Surveys, interviews, and focus groups.
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What is an example of computerised passive data collection?
Web analytics and tracking devices like GPS.
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What are some errors that can affect data accuracy?
Errors can arise in collection, entry, or processing.
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What does uncertainty refer to in data?
A lack of precision or ambiguity in the data.
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What are limitations in data?
Inherent constraints like sample size, coverage, or representativeness.
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What is informatics?
The study of the processing and management of information.
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What is the purpose of data visualisation?
To interpret and present data effectively using tools like graphs, infographics, and maps.
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What is structured data?
Data organized into a specific format, such as tables or spreadsheets.
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What is an example of unstructured data?
Text, images, or audio files.
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What is alternative data?
Data forms like likes, emoticons, and memes used for feedback.
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What is blockchain technology?
A distributed ledger for secure, transparent data management and verification.
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What does each block in a blockchain contain?
Verified transactions that enhance data security.
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What is the impact of public Wi-Fi on data security?
Public networks are generally unsecured and pose risks.
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What are the three Vs of big data?
Volume, Variety, and Velocity.
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What does data warehousing involve?
Centralizing and storing large amounts of data.
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What is velocity in data management?
The speed at which the data is generated and the need to process it in real time.
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What is data warehousing?
A process of centralizing and storing large amounts of data.
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What are the two main types of data?
What is quantitative data?
Numerical data that can be measured and compared. Examples: age, height, weight.
What is qualitative data?
Descriptive data that cannot be measured. Examples: opinions, emotions, perceptions.
What is the difference between primary and secondary data?
What are the four criteria for data quality?
What does relevance refer to in data quality?
The extent to which the data is related to the research question.
What does accuracy refer to in data quality?
The degree to which the data reflects true values of the variables.
What does validity refer to in data quality?
The degree to which the data measures what it is supposed to measure.
What does reliability refer to in data quality?
The consistency of the data over time and across different sources.
What are the two methods of data collection?
What is an example of manual active data collection?
Surveys, interviews, and focus groups.
What is an example of computerised passive data collection?
Web analytics and tracking devices like GPS.
What are some errors that can affect data accuracy?
Errors can arise in collection, entry, or processing.
What does uncertainty refer to in data?
A lack of precision or ambiguity in the data.
What are limitations in data?
Inherent constraints like sample size, coverage, or representativeness.
What is informatics?
The study of the processing and management of information.
What is the purpose of data visualisation?
To interpret and present data effectively using tools like graphs, infographics, and maps.
What is structured data?
Data organized into a specific format, such as tables or spreadsheets.
What is an example of unstructured data?
Text, images, or audio files.
What is alternative data?
Data forms like likes, emoticons, and memes used for feedback.
What is blockchain technology?
A distributed ledger for secure, transparent data management and verification.
What does each block in a blockchain contain?
Verified transactions that enhance data security.
What is the impact of public Wi-Fi on data security?
Public networks are generally unsecured and pose risks.
What are the three Vs of big data?
Volume, Variety, and Velocity.
What does data warehousing involve?
Centralizing and storing large amounts of data.
What is velocity in data management?
The speed at which the data is generated and the need to process it in real time.
What is data warehousing?
A process of centralizing and storing large amounts of data.
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