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I applied via Campus Placement and was interviewed in Sep 2022. There were 4 interview rounds.
MCQ based of loops, iteration, pseudocode, SQL and debugging were asked. 30 questions in total and fairly easy. 1 hour duration and I attempted about 20 questions. No negative marking. It was conducted on HackerEarth platform.
SQL query to get the second row from the top.
Use the LIMIT keyword to limit the number of rows returned.
Use the OFFSET keyword to skip the first row.
Order the rows by a column to ensure consistent results.
DBMS is a software system to manage databases, while RDBMS is a type of DBMS that uses a relational model.
DBMS stands for Database Management System, while RDBMS stands for Relational Database Management System.
DBMS can manage any type of database, while RDBMS uses a specific model based on tables, keys, and relationships.
DBMS is less strict in terms of data integrity, while RDBMS enforces strict rules to ensure data c...
Stored procedures are pre-written SQL codes that can be saved and reused. They are used to improve performance and security.
Stored procedures are used to reduce network traffic by executing a batch of SQL statements at once.
They can improve performance by reducing the amount of time spent parsing and optimizing SQL statements.
Stored procedures can also enhance security by allowing access to only specific parts of the d...
The data process in my project involves data collection, cleaning, analysis, and visualization.
Data collection involved gathering data from various sources such as surveys, databases, and APIs.
Data cleaning was done to remove duplicates, missing values, and outliers.
Data analysis was performed using statistical methods and machine learning algorithms.
Data visualization was used to present the findings in a clear and co...
The finding from the project was that there is a strong correlation between customer satisfaction and repeat purchases.
The project analyzed customer satisfaction surveys and purchase data
The data showed that customers who reported high satisfaction scores were more likely to make repeat purchases
This finding suggests that improving customer satisfaction can lead to increased customer loyalty and revenue
Three things I learned from my Data Science and Analytics course are statistical analysis, data visualization, and machine learning.
Statistical analysis: Learned how to use statistical methods to analyze data and draw conclusions.
Data visualization: Learned how to create visual representations of data to better understand patterns and trends.
Machine learning: Learned how to use algorithms to build predictive models and
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I applied via Company Website and was interviewed in May 2019. There were 5 interview rounds.
The weight of an aircraft is crucial for its performance and safety.
The weight of an aircraft includes the weight of the aircraft itself, fuel, passengers, cargo, and any other equipment on board.
The weight of an aircraft is measured in pounds or kilograms.
The weight of an aircraft affects its takeoff and landing performance, as well as its fuel efficiency and range.
Aircraft manufacturers provide maximum takeoff and la...
I was interviewed before Nov 2019.
SQL query to get top 100 Uber drivers by city
Join drivers and users tables on city
Aggregate driver ratings and count of rides
Order by rating and count of rides
Limit to top 100
Optimizing the listing of Restaurants on Swiggy involves using data-driven strategies to improve visibility, relevance, and user experience.
Analyze user behavior and preferences to understand their needs and preferences
Implement a ranking algorithm based on factors like ratings, reviews, popularity, and delivery time
Optimize search functionality to ensure accurate and relevant results
Collaborate with restaurants to imp...
Linear Regression is used for continuous data while Logistic Regression is used for categorical data.
Linear Regression predicts continuous values while Logistic Regression predicts probabilities.
Linear Regression uses a straight line to fit the data while Logistic Regression uses an S-shaped curve.
Linear Regression uses Mean Squared Error as the cost function while Logistic Regression uses Log Loss.
Linear Regression is...
Bias-Variance trade-off is the balance between overfitting and underfitting. High bias models are simple but inaccurate, low variance models are complex but overfit.
Bias-Variance trade-off is a fundamental concept in machine learning.
High bias models are simple and have low variance, but are inaccurate.
Low bias models are complex and have high variance, but can overfit the data.
Examples of high bias models are linear r...
Possible reasons for a car manufacturer's decline in profits by 40% year over year
Decreased demand for cars due to economic downturn
Increased competition from other car manufacturers
Rising production costs and expenses
Decline in consumer confidence and spending
Changes in government regulations impacting the automotive industry
posted on 21 Feb 2015
Quantifiable factors to rate cab drivers for company's purpose
Customer ratings and feedback
Number of completed trips
Average trip duration
Percentage of on-time pickups
Accident and traffic violation history
Vehicle cleanliness and maintenance
Driver punctuality and professionalism
The criterion for choosing between Yuvraj Singh and Stuart Binny for the World Cup squad would be based on their recent performance, fitness, and team balance.
Evaluate recent performance of both players
Assess fitness levels of both players
Consider team balance and required skill sets
Analyze pitch and weather conditions of the tournament
Take into account the opposition teams and their strengths and weaknesses
I applied via Referral and was interviewed before May 2020. There was 1 interview round.
To understand the supply of restaurants in a particular area of a city, we can use various methods.
Collect data from online directories like Yelp, Zomato, etc.
Conduct surveys to gather information about the number of restaurants in the area.
Analyze the population density and demographics of the area to estimate the demand for restaurants.
Check the number of restaurant permits issued by the local government.
Use GIS mapp...
I applied via Campus Placement and was interviewed in Mar 2021. There was 1 interview round.
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Associate Manager
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Delivery Boy
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Data Analyst
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