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I appeared for an interview before Apr 2024, where I was asked the following questions.
Pandas is a powerful Python library for data manipulation and analysis, providing data structures like DataFrames and Series.
Data Structures: Pandas provides two primary data structures - Series (1D) and DataFrame (2D) for handling data.
Data Manipulation: Easily manipulate data with functions like .groupby(), .pivot_table(), and .merge().
Data Cleaning: Functions like .dropna() and .fillna() help in handling missing dat...
Top trending discussions
I appeared for an interview before Jun 2016.
Brownian motion is the random motion of particles in a fluid due to collisions with other particles.
Brownian motion was first observed by Robert Brown in 1827.
It is named after the botanist Robert Brown.
The motion is caused by the random movement of fluid molecules.
Brownian motion is a continuous-time stochastic process.
It is often used to model various phenomena in physics, finance, and biology.
Properties of Brownian ...
A Martingale is a mathematical concept used in probability theory and statistics. Markov Processes are stochastic processes that satisfy the Markov property.
A Martingale is a sequence of random variables where the expected value of the next variable, given the current and past variables, is equal to the current variable.
Markov Processes are stochastic processes where the future state depends only on the current state a...
I sometimes struggle with perfectionism, which can lead to delays in project completion and increased stress.
Perfectionism can cause me to spend too much time on minor details, affecting deadlines.
For example, I once spent extra hours refining a visualization that was already effective.
I am learning to balance quality with efficiency by setting clear priorities.
I seek feedback from colleagues to help me recognize when ...
Assuming a leadership role can drive direction, while being a part of the group fosters collaboration and diverse input.
Leadership can help in setting clear goals and objectives, ensuring everyone is aligned.
As a leader, I can facilitate discussions and encourage participation from all members.
Being part of the group allows me to learn from others and contribute without the pressure of leadership.
For example, in a prev...
UNION combines results from two queries, removing duplicates; UNION ALL includes all results, keeping duplicates.
UNION removes duplicate rows from the result set.
UNION ALL includes all rows, even duplicates.
Example of UNION: SELECT name FROM table1 UNION SELECT name FROM table2.
Example of UNION ALL: SELECT name FROM table1 UNION ALL SELECT name FROM table2.
UNION may be slower due to duplicate elimination, while UNION A...
Crafting SQL queries requires understanding the database schema and the specific requirements of the task.
Understand the database schema: Know the tables, columns, and relationships.
Identify the requirements: Determine what data is needed based on the instance provided.
Write the SQL query: Use SELECT, JOIN, WHERE, and other clauses as necessary.
Test the query: Run the query to ensure it returns the expected results.
I'm a passionate software engineer with a strong background in full-stack development and a love for solving complex problems.
Graduated with a degree in Computer Science from XYZ University.
Worked at ABC Corp, where I developed a web application that improved user engagement by 30%.
Proficient in languages like JavaScript, Python, and Java, with experience in frameworks like React and Django.
Enjoy collaborating in agile...
Being assigned a project with unrealistic deadlines and minimal guidance
Received a project with tight deadlines and unclear requirements
Struggled to meet the deadlines due to lack of guidance and support
Had to work long hours and weekends to try to complete the project
Learned the importance of clear communication and setting realistic expectations
I approach difficult situations with a calm mindset, focusing on problem-solving and collaboration to find effective solutions.
Assess the situation: I analyze the problem to understand its root cause. For example, during a project delay, I identified communication gaps.
Stay calm and composed: I maintain a positive attitude, which helps in making rational decisions. In a high-pressure deadline, I prioritized tasks effec...
I applied via Naukri.com and was interviewed in Jun 2021. There was 1 interview round.
I applied via Naukri.com and was interviewed in May 2021. There were 5 interview rounds.
I applied via LinkedIn and was interviewed in Sep 2023. There was 1 interview round.
Hackerrank test of 2 medium questions
Discussing technical skills and tools used in data analysis, including software, methodologies, and relevant projects.
Proficient in SQL for data extraction and manipulation, e.g., writing complex queries to analyze sales data.
Experienced with Python for data analysis, using libraries like Pandas and NumPy for data cleaning and transformation.
Utilized Tableau for data visualization, creating interactive dashboards to pr...
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