Question
Which of the following best describes the primary role
of a data analyst within an organization?Solution
The core responsibility of a data analyst is to analyze data and extract actionable insights that help guide business decisions. They often work with data sets, clean and organize data, perform exploratory data analysis (EDA), and then interpret and present findings to stakeholders through reports or visualizations. Unlike data scientists or data engineers, data analysts typically focus on interpreting data rather than building complex algorithms or designing data systems. Their role is crucial in understanding trends and patterns within the data, which can lead to more informed strategic decisions. Option A is incorrect because developing complex machine learning algorithms is generally the role of a data scientist rather than a data analyst. While data analysts may work with machine learning models in some organizations, this is not their primary role. Option B is incorrect as designing data architecture and maintaining databases falls under the scope of a data engineer, not a data analyst. Option D is incorrect because creating visualization tools is often the role of a software developer or data visualization expert, whereas data analysts use these tools to present data. Option E is incorrect as managing IT infrastructure and network security is more aligned with IT roles, not data analysis.
Which of the following statements about normalization in relational databases is correct?
The amortized cost of appending an element at the end of a dynamic array is:
Which of the following scenarios violates Boyce-Codd Normal Form (BCNF) in a relational schema?
What is a key challenge in applying Natural Language Processing (NLP) techniques to real-world text data?
Which protocol is used by devices to obtain an IP address automatically in a network?
In a data warehouse, which of the following best describes the concept of "data granularity"?
What is the primary purpose of an Entity-Relationship (ER) Diagram in database design?
Which design pattern is best suited for managing the creation of objects without specifying their concrete classes?
Which SOLID principle emphasizes that a class should have only one reason to change?
Which of the following best illustrates Encapsulation in Object-Oriented Programming?