Which of the following describes the use of a representative amount of data from a main repository?

The correct answer is D. Sampling. Sampling is the technique of selecting a representative subset of data from a larger dataset to analyze or draw conclusions about the whole population. It is used when working with the full dataset is impractical due to size or cost. Observation (A) is the act of…

Data Concepts and Environments

Question

Options

AObservation
BDelta load
CWeb scraping
DSampling

How the community answered

(32 responses)

A
3% (1)
B
6% (2)
C
3% (1)
D
88% (28)

Explanation

Sampling is the technique of selecting a representative subset of data from a larger dataset to analyze or draw conclusions about the whole population. It is used when working with the full dataset is impractical due to size or cost. Observation (A) is the act of watching/recording events. Delta load (B) is an ETL method that loads only changed data since the last load. Web scraping (C) is extracting data from websites. Only sampling directly describes selecting a representative portion from a main repository.

Topics

#Data sampling#Representative data#Data subsets

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