10+ Data Analytics Intern Interview Questions and Answers for Freshers

Different data types in Python include integers, floats, strings, lists, tuples, dictionaries, and booleans.

• Integers: whole numbers without decimals (e.g. 5, -10)

• Floats: numbers with decimals (e.g. 3.14, -0.5)

• Strings: sequences of characters enclosed in quotes (e.g. 'hello', '123')

• Lists: ordered collections of items (e.g. [1, 'apple', True])

• Tuples: ordered, immutable collections of items (e.g. (1, 'banana', False))

• Dictionaries: unordered key-value pairs (e.g. {'key': 'value',...read more

Python is a high-level programming language known for its simplicity and readability.

• Python is an interpreted language, meaning it does not need to be compiled before execution.

• It supports multiple programming paradigms, including object-oriented, imperative, and functional programming.

• Python has a large standard library with built-in modules for various tasks, making it versatile and efficient.

• It is widely used in data analytics, machine learning, web development, and scient...read more

To swap 2 adjacent elements of a linked list, update the pointers accordingly.

• Create a temporary pointer to store the address of the next node of the first element

• Update the next pointer of the first element to point to the node after the next node

• Update the next pointer of the temporary pointer to point to the first element

• Update the next pointer of the node before the first element to point to the temporary pointer

Balance sheet is a financial statement that shows a company's assets, liabilities, and shareholders' equity at a specific point in time.

• Balance sheet provides a snapshot of a company's financial position.

• It consists of three main components: assets, liabilities, and shareholders' equity.

• Assets are what the company owns, liabilities are what it owes, and shareholders' equity is the difference between the two.

• Net Profit is the amount by which revenues exceed expenses in a given...read more

Garbage collector in Java is a program that automatically manages memory by reclaiming unused memory.

• Garbage collector is a part of Java Virtual Machine (JVM) responsible for automatic memory management.

• It identifies and deletes objects that are no longer reachable or needed by the program.

• Garbage collection helps prevent memory leaks and improves performance by freeing up memory for new objects.

• Examples of garbage collectors in Java include Serial, Parallel, CMS, and G1.

Query to find top best and worst feedback from the database

• Use SQL query to retrieve feedback data from the database

• Sort the feedback based on ratings to find the best and worst

• Limit the results to show only the top best and worst feedback

I can add value to business by analyzing data to identify trends, make informed decisions, and optimize processes.

• Utilizing data analytics tools to identify trends and patterns

• Providing insights for informed decision-making

• Optimizing processes for efficiency and cost savings

• Developing predictive models for forecasting

• Improving data quality and accuracy

There are multiple types of payment methods that can be received.

• Cash

• Credit card

• Debit card

• Online payment

• Bank transfer

Graphical data refers to data that is represented visually through graphs, charts, or other visualizations.

• Graphical data helps in easily interpreting trends, patterns, and relationships within the data.

• Common types of graphical data include bar graphs, pie charts, line graphs, and scatter plots.

• It is often used in data analytics to communicate insights and findings effectively to stakeholders.

• Graphical data can be created using tools like Microsoft Excel, Tableau, or Python ...read more

Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.

• Allows for code reusability and promotes a hierarchical structure

• Derived class inherits properties and behaviors from a base class

• Can have multiple levels of inheritance

• Example: Class 'Dog' can inherit from class 'Animal' and inherit attributes like 'name' and methods like 'eat()'