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Grade 12 Quizzes, Questions & Answers

Recent Grade 12 Quizzes

Training Data Bias Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
What is training data bias in AI systems?

Errors in the algorithm's mathematical calculations

Systematic errors or prejudices in the data used to train AI models

The tendency of humans to prefer certain outcomes

Deliberate manipulation by programmers

Narrative Visualization Basics Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
What is the primary purpose of narrative visualization?

To make data look aesthetically pleasing

To communicate insights and guide audience understanding through data

To replace written reports entirely

To display all available data points simultaneously

D3 js Visualization Basics Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
What does D3 stand for in data visualization?

Data-Driven Documents

Dynamic Data Display

Digital Data Design

Distributed Data Diagrams

Map Visualization Basics Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
Which map projection best preserves accurate distances from a single point?

Mercator projection

Azimuthal equidistant projection

Robinson projection

Sinusoidal projection

Real Time Dashboard Basics Quiz

Questions: 15 | Attempts: 11 | Last updated: May 1, 2026

Sample Question
What is the primary purpose of a real-time dashboard?

Display live data and metrics to enable immediate decision-making

Store historical data for archival purposes

Generate printed reports at scheduled intervals

Manage user account permissions and access control

Distributed Computing Basics Quiz

Questions: 15 | Attempts: 11 | Last updated: May 1, 2026

Sample Question
What is the primary purpose of a distributed system?

To increase processing power and reliability by connecting multiple computers

To replace all single-computer systems

To eliminate the need for network infrastructure

To reduce the total cost of hardware

Data Volume Scalability Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
What is the primary difference between vertical and horizontal scaling?

Vertical adds more servers; horizontal upgrades existing hardware

Vertical upgrades hardware on one machine; horizontal adds more servers

Vertical reduces costs; horizontal increases them

Vertical is for databases only; horizontal is for applications only

Apache Spark Overview Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
What does Apache Spark primarily provide as a computing framework?

A relational database management system

A unified engine for large-scale data processing

A web server for hosting applications

A file storage system only

Null and Alternative Hypothesis Quiz

Questions: 15 | Attempts: 16 | Last updated: May 1, 2026

Sample Question
What is the null hypothesis typically denoted as?

H₀

H₁

Ha

Hx

Missing Data Handling Quiz

Questions: 15 | Attempts: 10 | Last updated: May 1, 2026

Sample Question
What is the primary reason missing data occurs in datasets?

Data collection errors or incomplete responses

Random computer glitches only

Intentional removal by analysts

Data format incompatibility

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