ACCA Applied Skills · Performance Management · Big data and data analytics
A supermarket chain collects data from loyalty cards, social media posts, in-store CCTV and sensor readings, arriving continuously and in many formats. Which set of characteristics of big data does this best illustrate?
The scenario shows volume, velocity and variety. The chain gathers very large quantities of data, it arrives continuously, and it comes in many formats such as text, images and sensor readings, which are the defining features of big data.
- AVolume, velocity and varietyCorrect
- BAccuracy, timeliness and relevance
- CMateriality, prudence and consistency
- DValidity, reliability and completeness only
Explanation
Big data is commonly described by large volume, high velocity (continuous arrival) and wide variety (structured and unstructured formats). The scenario shows all three. Accuracy and timeliness are general information qualities, not defining characteristics of big data.
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