DA0-001 Question #314: Real Exam Question with Answer & Explanation

The correct answer is B: Aggregation. To effectively summarize a dataset, an analyst should use aggregation, which involves combining data into meaningful groups and calculating summary statistics. This process helps to extract key insights and reduce the dataset to a more manageable overview.

Data Analysis

Question

Which of the following should an analyst do to best summarize the data on a data set?

Options

AFiltering
BAggregation
CSorting
DConcatenation

Explanation

To effectively summarize a dataset, an analyst should use aggregation, which involves combining data into meaningful groups and calculating summary statistics. This process helps to extract key insights and reduce the dataset to a more manageable overview.

Common mistakes.

A. Filtering selects a subset of data based on specific criteria but does not inherently summarize the remaining data.
C. Sorting arranges data in a particular order but does not reduce or summarize the dataset itself.
D. Concatenation combines data strings or datasets end-to-end, which is a data manipulation technique, not a summarization technique.

Concept tested. Data summarization - Aggregation

Reference. https://learn.microsoft.com/sql/t-sql/queries/aggregate-functions-transact-sql

Topics

#Data summarization#Data aggregation#Data analysis techniques#Data manipulation

Community Discussion

No community discussion yet for this question.

Full DA0-001 Practice Browse All DA0-001 Questions