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Questions and Answers
What type of data contains tags to structure information hierarchically?
What type of data contains tags to structure information hierarchically?
- CSV file
- JSON file (correct)
- Image files
- Text documents
What stage of the data life cycle involves gathering data from sources?
What stage of the data life cycle involves gathering data from sources?
- Analysis
- Collection (correct)
- Visualization
- Interpretation
What is the process of removing errors and inconsistencies from data called?
What is the process of removing errors and inconsistencies from data called?
- Transformation
- Filtering
- Modeling
- Cleaning (correct)
Which plot type compares categories or groups?
Which plot type compares categories or groups?
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Study Notes
Data Types and Structures
- Hierarchical data structures are characterized by the use of tags to organize information in a nested, tree-like format.
Data Life Cycle
- The collection of data from sources is part of the data gathering stage, which is a crucial step in the data life cycle.
Data Cleaning
- Data cleaning is the process of detecting and correcting errors, inconsistencies, and inaccuracies in a dataset to ensure data quality.
Data Visualization
- Bar charts are used to compare categories or groups, providing a visual representation of categorical data.
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