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()'

Data analytics is the process of examining data sets to draw conclusions and support decision-making.

• Involves collecting, processing, and analyzing data to uncover patterns.

• Used in various fields like business, healthcare, and sports for insights.

• Example: Retailers analyze customer purchase data to optimize inventory.

• Tech companies use data analytics to improve user experience and product features.

• Healthcare providers analyze patient data to enhance treatment outcomes.