Learning objective
Explain data, databases, and cloud, reproduce the worked example and justify a decision in the case study.
Before you begin
Artificial intelligence
Understand
Data becomes useful when it is structured, protected, analyzed, and interpreted correctly.
Worked example
A database connects records; a chart reveals a trend but does not always prove cause.
Analysis and common mistakes
A table organises observation rows and variable columns. A key identifies a record. Address missing values, duplicates and incompatible units before calculating averages.
Case study — reasoning
Values 10, 20 and a blank do not average 10 if blank means unknown. The two known observations average 15; disclose the missing observation.
Knowledge check
Summary
Data becomes useful when it is structured, protected, analyzed, and interpreted correctly.
Sources for further study and verification
AI-assisted draft · Educator review not completed · Unofficial supplementary resource