Utilising secondary data - introduction

4 important questions on Utilising secondary data - introduction

What is secondary data?

Data that were collected initially for some other purpose

Secondary data include both quantitive (numeric) and qualitative (non-numeric) data, and are used principally in both descriptive and explanatory research.

What is structured data?

Data that have received some form of selection or summarising.

What is unstructured data?

Data that in their current form, do not follow a predefined structure.
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What is big data?

Where data sets are massive in volume, complex in variety (often comprising both structured and unstructured data) and the velocity of which they are being added to is high.

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