ITPEC IP October 2018 Question 94
Which of the following is term for a method that uses data such as accumulated sales data to find regularity such as a correlation between weather and products that sell well?
Explanation
Data mining — analysing large volumes of accumulated data to find patterns and relationships that nobody specified in advance.
Statistical and machine-learning techniques are applied to data such as years of sales records to discover rules like "when it is hot, cold drinks and ice cream sell well" or "customers who buy X also buy Y". The results are used for stocking, pricing and promotion decisions.
Answer (c)
Why not others:
- •(a) — a data warehouse is the store of integrated, time-series business data that data mining works on; it holds the data but does not find the regularities
- •(b) — data processing is the general term for handling data with computers (collecting, calculating, sorting, outputting), not specifically for discovering patterns
- •(d) — data modeling designs the structure of data for a system, such as entities and their relationships in an E-R diagram
Key rule: The warehouse stores the history, BI tools report what is known to look for, and data mining discovers the relationships no one knew to look for.
System Strategy · AI-written, may contain errors
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