Unified Mentor Data Analytics Intern Interview Questions and Answers

Questions was related to python only

Q1. The 2nd round was for 15 min my interview was at 11 but interviewer didn't came i was waiting for 2-3 hrs then i leave meeting and after that i got mail that i am having interview at 5 pm then again i join...read more
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Q2. What is garbage collector in java?
Ans. 
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 col...read more
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Q3. What is inheritance?
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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()'
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Q4. Difference between sql and non sql database?
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SQL databases are relational databases that use structured query language, while NoSQL databases are non-relational and do not use SQL.
• SQL databases are table-based and have a predefined schema, while NoSQL databases are document-based, key-value pairs, graph databases, or wide-column stores.

• SQL databases are good for complex queries and transactions, while NoSQL databases are better for hierarchical data storage.

• Examp...read more
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Q5. What is graphical data?
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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 cre...read more
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Q1. What is time series?
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Time series is a sequence of data points collected at regular time intervals, used to analyze trends and patterns over time.
• Time series data is ordered chronologically

• Commonly used in forecasting future values based on past patterns

• Examples include stock prices, weather data, and sales figures
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Q2. How do you handle missing values in dataset?
Ans. 
Handle missing values using techniques like imputation, deletion, or modeling.
• Use imputation techniques like mean, median, mode for numerical data

• For categorical data, use mode or create a new category for missing values

• Consider using advanced techniques like KNN imputation or predictive modeling

• Delete rows or columns with high percentage of missing values if appropriate
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Aptitude and Reasoning

Describe a topic of our routine life

Q1. How can I get this job in easy way?
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Q2. Is there any work from home jobs available?
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Submit the project assignment

Q1. How to interact with oni on one?
Ans. 
Interacting with one on one involves clear communication, active listening, and building rapport.
• Maintain eye contact to show attentiveness

• Ask open-ended questions to encourage conversation

• Practice active listening by paraphrasing and summarizing what the other person says

• Show empathy and understanding towards their perspective

• Build rapport by finding common ground or shared interests
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Q2. Is there any salary increments?
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Q1. Take a test by computer skills
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Basic coding questions such as Fibonacci series and Minimum odd integer in a list. SQL questions based on window functions and tableau theoretical questions

A common English speaking test

Q1. Why do you want to join deloitte
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Q2. Salary expectations and reason for leaving current company
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Q3. What was your salary when you started working and how much it has changed since then
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Q4. How will you resolve conflict within your team if there's a critical deadline
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Aptitude tests are often used to assess academic potential or career suitability and may be used to assess either mental or physical talent in a variety of domains.

Coding testIn this Tutorial, we have Provided the Most Common Coding Interview Questions & Answers with Program Logic & Code Examples for you to Practice Programming:

Programming tests to help you hire better developersWhat is a Coding Challenge?If you are looking to land one such job, it is important that you are well-prepared for these challenges.