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Calculate the product purchase patterns in the transactions table to find the total number of transactions and total amount spent per customer for each quarter of 2021. Additionally, derive the quarter over quarter growth in total amount spent for each user.
SQL
Mastercard
null
coding
null
calculate the rmse values for the model building.
Data Science
Intel
null
null
null
Calculate the total number of ATMs that would be required in a new city like Faridabad.
Data Science
Mastercard
null
null
null
Calculate total quantity from a dictionary
Python
null
null
No
No
Can all matrices be decomposed into eigenvectors and eigenvalues?
Machine Learning
Robinhood
null
null
null
Can an AB test with unbalanced sample sizes result in a bias towards the smaller group?
Data Analytics
Chime
null
null
null
can aws elastic beanstalk handle development, staging, and production environments?
Data Analytics
AWS
null
null
null
Can SQL and Power Query/Query Editor be used together?
Data Engineer
null
null
null
null
Can u write an c++ program for list of employees working at shell with salary greater than 20k and 30 k
Data Engineer
Shell
2,023
yes
null
Can unbalanced sample sizes in an A/B test result in a bias towards the smaller group?
Data Analytics
Chime
null
null
null
Can we apply linear regression instead of logistic regression and vice versa?
Machine Learning
Mastercard
null
null
null
Can we automate Tableau Reports? If yes, how?
Data Engineer
null
null
null
null
Can we create a view based on another view?
SQL
Glider
2,024
null
null
Can we disable a trigger? If yes, how?
SQL
null
null
null
null
Can we disable a trigger? If yes, how?
SQL
null
null
null
null
Can we have more than one active relationship between two tables in data model of power pivot?
Data Analytics
null
null
null
null
Can we have more than one active relationship between two tables in Power Pivot Data Model?
Data Analytics
null
null
null
null
Can we make multi-line comments in Python?
Python
null
null
No
No
Can we Pass a function as an argument in Python?
Python
null
null
null
null
Can we refresh data when a Power BI report is published in the cloud?
Data Engineer
null
null
null
null
Can we refresh our Power BI reports once uploaded to cloud (Share point or Powebi.com)?
Data Engineer
null
null
null
null
Can we rely on accuracy alone to measure model performance? Explain Why?
Machine Learning
Mastercard
null
null
null
Can we scrap data via python?
Python
null
null
No
No
Can we use else with For in Python?
Python
null
null
No
No
Can window functions be used in conjunction with joins?
Data Engineer
Plaid
null
null
null
Can you also provide some examples of how you've leveraged it in your personal projects?
Data Science
SAP
null
null
null
Can you articulate the differences between using a confusion matrix and an ROC curve for model evaluation?
Data Science
Coinbase
null
null
null
can you avoid overfitting your model?
Data Science
Intel
null
null
null
Can you build a classifier to classify customers based on their credit worthiness into 4 categories?
Data Science
Goldman Sachs
null
null
null
Can you build a model to predict whether a user will cancel their account?
Data Science
Robinhood
null
null
null
Can you build machine learning models for predictions?
Data Science
JPMorgan Chase
null
null
null
Can you capitalize a sentence?
Data Science
JPMorgan Chase
null
coding
null
Can you clarify the distinctions between the ‘pop()’, ‘remove()’, and ‘del’ operations when working with Python lists?
Python
null
null
No
No
Can you code a binary search routine and discuss its time efficiency? Additionally, is there room for further optimization?
Machine Learning
Coinbase
null
coding
null
Can you code a fair dice roll using a random number generator and demonstrate its fairness?
Data Science
Coinbase
null
coding
null
Can you code a Python class that implements the iterator protocol for sequences?
Data Science
Coinbase
null
coding
null
Can you code in Python?
Data Science
JPMorgan Chase
null
null
null
Can you conduct a simulation and coding?
Data Science
Robinhood
null
null
null
Can you convert a string type column into a number type column?
Data Analytics
null
null
null
null
Can you create a detailed project plan for a complex, multi-year technology initiative?
All
Mastercard
null
null
null
Can you create a Python function that adjusts the stream count for songs with a markdown rate?
Machine Learning
Plaid
null
coding
null
Can you create a series from the dictionary object in pandas?
Python
null
null
null
null
Can you define cross-validation and describe how you use this process when analyzing a data set?
Data Science
Robinhood
null
null
null
Can you demonstrate a binary search technique to find the highest element in an integer list?
Machine Learning
Coinbase
null
null
null
Can you demonstrate how dynamic programming can be used to find an array's longest increasing sequence?
Machine Learning
Stripe
null
null
null
Can you demonstrate how to create a normally distributed set of 1000 data points with particular mean and variance, conduct summary statistics, and construct a density plot for it?
Data Science
SAP
null
null
null
Can you demonstrate how to reverse a binary tree in a selected programming language?
Data Science
Coinbase
null
null
null
Can you demonstrate how you would determine the rolling average for a certain metric over a designated period of time?
Data Science
SAP
null
null
null
Can you demonstrate how you would determine the rolling average for a certain metric over a designated period of time?
Data Science
Chime
null
null
null
can you describe a challenging project you worked on where you had to collaborate with cross-functional teams? what were the key challenges, and how did you overcome them?
Data Science
AWS
null
null
null
Can you describe a challenging situation you encountered at work and explain how you managed to overcome it?
Data Science
Stripe
null
null
pe
Can you describe a challenging situation you encountered at work and how you resolved it?
Data Science
JPMorgan Chase
null
null
null
Can you describe a complex data analysis project you've worked on, including the tools and techniques you used to extract insights?
Data Analytics
Coinbase
null
null
null
Can you describe a complex data analysis project you've worked on, including the tools and techniques you used to extract insights?
Machine Learning
Coinbase
null
null
null
Can you describe a complex data engineering project you have worked on?
Data Engineer
null
null
null
pe
Can you describe a machine learning algorithm?
Data Analytics
JPMorgan Chase
null
null
null
Can you describe a past experience where you successfully optimized an algorithm, and what were the results
All
Mastercard
null
null
null
Can you describe a pipeline you have built and how you overcame any obstacles?
Data Engineer
null
null
null
pe
Can you describe a process for determining the dot product of two sparse matrices?
Machine Learning
Coinbase
null
null
null
Can you describe a project in which you faced failure?
Data Analytics
Stripe
null
null
null
Can you describe a project that you are particularly proud of?
Data Science
Stripe
null
null
pe
Can you describe a project where you applied machine learning to improve product features?
All
Mastercard
null
null
null
Can you describe a situation in which you had to communicate complex technical information to a non-technical audience?
Data Science
American Express
null
null
pe
Can you describe a situation where a mistake you made had an impact on your team?
Data Science
Wells Fargo
null
null
null
Can you describe a situation where you faced a significant challenge at work and how you handled it?
All
Mastercard
null
null
null
Can you describe a situation where you had to explain complex data insights to a non-technical audience?
Data Analytics
Robinhood
null
null
null
Can you describe a situation where you had to foster growth and ensure your team stayed ahead technologically?
All
Mastercard
null
null
null
Can you describe a situation where you had to handle a difficult customer?
Data Analytics
JPMorgan Chase
null
null
null
Can you describe a situation where you had to think outside the box?
Data Science
JPMorgan Chase
null
null
null
Can you describe a situation where you had to work collaboratively with a team, and how you contributed to the team's success?
Machine Learning
Capital One
null
null
null
Can you describe a situation where you solved a problem that ultimately led to a difficult position?
Data Analytics
PayPal
null
null
pe
Can you describe a situation where you were in a leadership position within a team?
Data Analytics
JPMorgan Chase
null
null
null
Can you describe a situation where you worked with a complex set of data?
Data Analytics
JPMorgan Chase
null
null
null
Can you describe a teamwork experience involving individuals with diverse backgrounds?
Data Science
JPMorgan Chase
null
null
pe
Can you describe a time when you had to adapt to a significant change at work?
Data Science
Stripe
null
null
pe
Can you describe a time when you had to communicate a complex idea or plan to a team or individual with less technical knowledge? How did you ensure they understood?
All
Mastercard
null
null
null
Can you describe a time when you had to work with a difficult stakeholder?
Data Science
Block
null
null
pe
Can you describe a time where a project did not go as planned, and how did you handle it?
Data Science
Stripe
null
null
pe
Can you describe a time where you had to make a difficult ethical decision in your work as a Data Science?
Data Science
Stripe
null
null
pe
Can you describe a visualization or dashboard you might create using Stripe transaction data to provide insights into revenue trends or customer behavior?
Data Science
Stripe
null
null
null
Can you describe an instance when you assumed a leadership role in a group project?
Data Analytics
Goldman Sachs
null
null
null
Can you describe an instance when you made a mistake and explain how you addressed it?
Data Science
Stripe
null
null
pe
Can you describe how job scheduling with deadline works?
Data Engineer
Goldman Sachs
null
null
null
can you describe how to specify variables in sas code?
Data Analytics
AWS
null
null
null
Can you describe how you would develop a customer-centric product within a framework where both technical and regulatory landscapes are complex?
All
Mastercard
null
null
null
Can you describe how you would estimate the probability of ordering a ride, and what assumptions are necessary for this computation? How would a confidence interval be generated for this probability?
Data Science
Chime
null
null
null
Can you describe how you would make a decision with limited information in a rapidly evolving financial sector?
All
Mastercard
null
null
null
Can you describe non-linear estimates?
Data Science
Wells Fargo
null
null
null
can you describe some features of restful web services?
Data Analytics
IBM
null
null
null
Can you describe some techniques for optimising Spark jobs for better performance and resource management?
Data Engineer
JPMorgan Chase
null
null
null
Can you describe something in statistics that you learned recently and like?
Data Science
JPMorgan Chase
null
null
pe
can you describe the basic syntax for developing sas code?
Data Analytics
AWS
null
null
null
can you describe the basic syntax of writing code in sas?
Data Analytics
AWS
null
null
null
Can you describe the difference between ?
Data Engineer
Pico MES
null
null
null
Can you describe the difference between A/B testing and multivariate testing for product optimization?
Data Analytics
Stripe
null
null
null
Can you describe the key components of a strong data processing pipeline? What skills or technologies are most important in building an effective pipeline?
Data Engineer
null
null
null
pe
Can you describe the meaning of precision and recall metrics in Machine Learning? How do these metrics help us to evaluate the effectiveness of classification models?
Data Science
Chime
null
null
null
Can you describe the procedural steps of the simplest method used for optimization?
Data Science
Coinbase
null
null
null
Can you describe the projects you have worked on?
Data Science
Wells Fargo
null
null
null
Can you describe the purpose and interpretation of an ROC curve in model evaluation? How would you contrast bagging with boosting in ensemble learning?
Data Science
Chime
null
null
null