Kunny DHA Quiz 2

Which hierarchy level in data representation is directly above 'Records'?

• Characters
• Fields
• Files
• Database

If an attribute of a data set is the temperature, what type of data would it be considered?

• Nominal
• Ordinal
• Interval
• Ratio

If you are analyzing a data set in which any value within a specific interval is possible, what type of data is it?

• Discrete
• Continuous
• Categorical
• Numerical

In the Data Lifecycle Management, what step directly follows 'Preserve'?

• Collect
• Integrate
• Analyse
• Discover

The main purpose of a database is to...

• store historical and commutative data from single or multiple sources
• analyze data
• record data
• all of the above

What is the primary goal of the 'Transform' stage in the ETL process?

• To read data from a database
• To convert the extracted data into a suitable form for analysis
• To load the data into a data warehouse
• All of the above

In the context of data aggregation, why might data be aggregated?

• To reduce the number of attributes or objects
• To change scale
• To create more “stable” data
• All of the above

Which of these is not a primary source of Big Data?

• Media
• Database
• Data Warehouse
• IOT

What is the first step in the data analysis process?

• Collect Data
• Prepare Data
• Analyse Data
• Define Problem

What does data cleansing involve in data preparation steps?

• Detecting and correcting incorrect data in the data set
• Removing irrelevant data from the data set
• Both A and B
• None of the above