What is data structuring? The process of changing the organization and relationships among
data fields for analysis.
What does data aggregation involve?Presenting data in a summarized form, which can result in
lost information.
What is data joining? Combining data from different tables into a single table.
What is data pivoting? Rotating data from rows to columns to change its orientation for
analysis.
What is data validation? Analyzing data to ensure it meets high-quality standards: accuracy,
completeness, consistency, timeliness, and validity.
What is visual inspection in data validation? Examining data visually to identify problems.
What are the four categories of data analytics? Descriptive, Diagnostic, Predictive, and
Prescriptive analytics.
What does descriptive analytics answer? The question 'What happened?'
What does diagnostic analytics answer? The question 'Why did this happen?'
What does predictive analytics answer? The question 'What might happen in the future?'
What does prescriptive analytics answer? The question 'What should be done?'