A Cluster Is a Subset of Objects That Are Similar

question 39

Multiple Choice

A cluster is a subset of objects that are similar and Clustering is the process of grouping data into a set of ______________.

• A) Irrelevant data
• B) Meaningless categories
• C) Statistical predictions
• D) Meaningful subclasses called clusters

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Definitions:

Sample Size

The number of units or observations collected from a population for the purpose of a statistical analysis.

Significance Level

Significance level is a threshold in hypothesis testing, denoting the probability of rejecting the null hypothesis when it is actually true, often set at 0.05 or 5%.

Power of the Test

The probability that the test correctly rejects the null hypothesis when the alternative hypothesis is true, indicating the test's effectiveness.

Power Consumption

The amount of electrical energy used by devices or infrastructure within a specific timeframe, often measured in kilowatt-hours (kWh).