What is Big Data primarily composed of?

• Small data sets

• Digitized data

• Manual records

• Non-digital information

Which tool is used for data visualization?

• MS Word

• MS Excel

• Adobe Photoshop

• MS Access

What is the main function of a data warehouse?

• Data cleaning

• Data storage and analysis

• Data distribution

• Data entry

Which of the following is an example of machine-generated data?

• Survey responses

• Focus group discussions

• Sensor data

• Interviews

What is meant by the 'velocity' of Big Data?

• The variety of data types

• The speed of data processing

• The volume of data

• The veracity of data

Explain the role of Hadoop in Big Data analytics.

• Visualization tool

• Spreadsheet software

• Distributed data processing framework

• Statistical analysis software

How does real-time data processing benefit businesses?

• Slows down decision-making

• Increases data storage needs

• Enhances decision-making speed

• Reduces the amount of data collected

What does a pie chart best represent?

• Time series data

• Correlation between two variables

• Distribution of categories

• Detailed textual data

Describe how a scatter plot is used in data analysis.

• To show hierarchical data

• To demonstrate trends over time

• To show relationships between two variables

• To compare different data sets

Which data analysis technique would you use to predict future trends?

• Descriptive analytics

• Diagnostic analytics

• Predictive analytics

• Prescriptive analytics