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1. A company wants to use data mining techniques to
discover hidden patterns and trends in its customer data.
Which of the following is not a common data mining task?
a) Classification
b) Clustering
c) Regression
d) Encryption*
Rationale: Encryption is a process of transforming data
into a secure format, not a data mining task.
2. A business analyst needs to create a dashboard that
shows the key performance indicators (KPIs) of a sales
department. Which of the following tools is most suitable
for this purpose?
a) Microsoft Excel
b) Microsoft Power BI*
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