DMA - Big Data & Secondary Data

Which of the following is NOT a characteristic of Big Data?

• Volume

• Variety

• Velocity

• Visibility

What is an example of people-generated data?

• Social media posts

• Smartwatch sensor data

• Satellite images

• Credit card transactions

Which of the following best describes machine-generated data?

• Data manually entered by employees

• Data collected by IoT devices and sensors

• Data from social media interactions

• Customer survey responses

What is a major challenge of organisation-generated data?

• It is mostly unstructured and difficult to analyse

• It is slow to update and often siloed within departments

• It is difficult to track in real-time

• It is unreliable and frequently incorrect

How does Netflix use Big Data?

• To manually select movies for users

• To replace human employees with AI

• To anticipate customer demand and personalise content

• To store customer payment details securely

What is a major ethical concern related to Big Data?

• It is too expensive to store

• It is only useful for large corporations

• It makes businesses less competitive

• Algorithms may reinforce discrimination and bias

What is an advantage of using Big Data in fraud detection?

• It can identify suspicious patterns in transactions automatically

• It ensures 100% accuracy in detecting fraud

• It eliminates the need for human analysts

• It prevents all fraudulent activities before they happen

What is secondary data?

• Data collected firsthand for a specific research project

• Data obtained from existing sources collected by others

• Data that is always accurate and up-to-date

• Data collected through face-to-face interviews

Which of the following is an example of internal secondary data?

• Customer transaction records of a company

• Government census reports

• Industry market research reports

• Social media analytics from an external provider

What is a key benefit of using secondary data?

• It always provides the exact data needed

• It eliminates the need for ethical considerations

• It saves time, resources, and costs compared to primary data collection

• It is always current and up to date