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Netflix user churn case study,
Uber booking number reduce
I applied via Company Website and was interviewed before Nov 2022. There were 2 interview rounds.
Top trending discussions
I applied via Company Website and was interviewed in Jul 2023. There were 4 interview rounds.
Number sires, clock, logic, arithmetic, geometry
Code test basic, ans the basic knowledge, write code
Python is a high-level programming language known for its simplicity and readability.
Python is widely used for web development, data analysis, artificial intelligence, and scientific computing.
It emphasizes code readability and uses indentation to define code blocks.
Python has a large standard library and a vibrant community of developers.
Example: print('Hello, World!')
Example: import pandas as pd
Python is a versatile programming language used for data analysis, web development, artificial intelligence, automation, and more.
Data analysis and visualization
Web development (Django, Flask)
Artificial intelligence and machine learning (TensorFlow, PyTorch)
Automation and scripting
Scientific computing (NumPy, SciPy)
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 running.
It supports multiple programming paradigms, including object-oriented, imperative, and functional programming.
Python has a large standard library and a thriving community, making it versatile and widely used.
Example: Python is used for web develop...
Object-oriented programming (OOP) is a programming paradigm based on the concept of 'objects', which can contain data and code.
OOP allows for the organization of code into reusable components called classes.
Classes can have attributes (variables) and methods (functions) associated with them.
In Python, everything is an object, and classes can be defined using the 'class' keyword.
Encapsulation, inheritance, and polymorph
An array in Python is a data structure that stores a collection of elements of the same type.
Arrays can store elements such as integers, floats, or strings.
Arrays are indexed starting from 0, with elements accessed using their index.
Example: arr = ['apple', 'banana', 'cherry']
I was asked a medium-level SQL question that involved the RANK function.
I applied via Referral and was interviewed in Mar 2023. There were 2 interview rounds.
I have 3 years of experience as a data analyst in the finance industry.
Worked with large datasets to extract meaningful insights
Performed data cleaning, transformation, and visualization
Created and maintained dashboards and reports for stakeholders
Conducted statistical analysis and built predictive models
Collaborated with cross-functional teams to identify business opportunities
I have strong skills in data analysis, including proficiency in statistical analysis, data visualization, and programming languages such as Python and SQL.
Proficient in statistical analysis techniques
Skilled in data visualization using tools like Tableau
Strong programming skills in Python and SQL
Experience with data cleaning and preprocessing
Ability to interpret and communicate insights from data
Familiarity with machin...
I applied via Naukri.com and was interviewed before Apr 2021. There were 4 interview rounds.
Technica questions related to sql
I applied via Naukri.com and was interviewed in Apr 2024. There was 1 interview round.
Test was based on SQL, coding and MCQ. Coding involved nested query.
I applied via Job Portal and was interviewed before Jun 2022. There were 2 interview rounds.
I applied via Company Website and was interviewed before Feb 2023. There were 2 interview rounds.
Simple SQL & Excel test
I applied via Company Website and was interviewed before Feb 2023. There was 1 interview round.
Types of join in SQL include inner join, left join, right join, and full outer join.
Inner join returns only the matching records from both tables.
Left join returns all records from the left table and the matching records from the right table.
Right join returns all records from the right table and the matching records from the left table.
Full outer join returns all records when there is a match in either the left or rig
A left join is used to combine data from two tables based on a common column, including all records from the left table.
Left join returns all rows from the left table and the matching rows from the right table.
It is useful when you want to retrieve all records from the left table, even if there are no matches in the right table.
The result of a left join will have NULL values in the columns from the right table where th...
The number of rows after applying join operations depends on the type of join used and the data in the tables being joined.
Inner join retains only the rows that have matching values in both tables
Left join retains all rows from the left table and the matched rows from the right table
Right join retains all rows from the right table and the matched rows from the left table
Full outer join retains all rows when there is a
VLOOKUP in Excel is used to search for a value in a table and return a corresponding value, while SQL functions like JOIN and WHERE are used to retrieve data from multiple tables based on specified conditions.
VLOOKUP is specific to Excel and works on a single table, while SQL functions can work on multiple tables.
VLOOKUP requires the table to be sorted in ascending order, while SQL functions do not have this requiremen...
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