question stringlengths 11 711 | domain stringclasses 8
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values | year float64 2.02k 2.02k ⌀ | coding stringclasses 2
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values | category float64 0 1 |
|---|---|---|---|---|---|---|
Describe the setup and assumptions of using linear discriminant analysis (LDA). | Machine Learning | Robinhood | null | no | no | 0 |
Describe your experience with data compliance regulations (e.g., GDPR, CCPA) and their impact on data engineering practices. | Data Engineer | Robinhood | null | no | yes | 0 |
Describe your experience with ETL (Extract, Transform, Load) tools and frameworks. | Data Engineer | Robinhood | null | no | yes | 0 |
Describe your experience with relational databases like MySQL or PostgreSQL. | Data Engineer | Robinhood | null | no | yes | 0 |
Discuss your knowledge of distributed computing frameworks like Apache Spark or Hadoop. | Data Engineer | Robinhood | null | no | no | 0 |
Discuss your knowledge of serverless computing and its benefits for data engineering tasks. | Data Engineer | Robinhood | null | no | no | 0 |
Do you perform data wrangling and data cleaning before applying machine learning algorithms to your data analysis? | Data Science | Robinhood | null | no | no | 0 |
Explain a tax basis and its importance in tax season. | Data Science | Robinhood | null | no | no | 0 |
Explain the concept of partitioning and bucketing in distributed systems. | Data Engineer | Robinhood | null | no | no | 0 |
Explain the importance of data governance and data privacy in a data engineering context. | Data Engineer | Robinhood | null | no | no | 0 |
Explain the process of building a data pipeline from data ingestion to transformation and loading. | Data Engineer | Robinhood | null | no | no | 0 |
Explain what Information Gain and Entropy are in a Decision Tree? | Machine Learning | Robinhood | null | no | no | 0 |
Explain your experience with cloud platforms like AWS, GCP, or Azure. | Data Engineer | Robinhood | null | no | yes | 0 |
Formulate the background behind an SVM and show the optimization problem it aims to solve. | Machine Learning | Robinhood | null | no | no | 0 |
Given an array of numbers represents heights of 2-d mountains, compute the amount water stored after the rainfall among those mountains. | Data Science | Robinhood | null | no | no | 0 |
Given an array of numbers that represent the heights of 2-D Mountains, compute the amount of water stored after the rainfall among those mountains. | Data Science | Robinhood | null | no | no | 0 |
Have you worked with probability in a professional setting? | Data Science | Robinhood | null | no | no | 0 |
How are decision trees trained? | Machine Learning | Robinhood | null | no | no | 0 |
How can MLE be used to estimate values in linear regression? | Machine Learning | Robinhood | null | no | no | 0 |
How can we describe the model setup formulaically and evaluate the posterior probabilities and log likelihood for a Gaussian Mixture Model (GMM) for anomaly detection? | Machine Learning | Robinhood | null | no | no | 0 |
How can we determine if a new transaction should be deemed fraudulent for a Gaussian Mixture Model (GMM) for anomaly detection? | Machine Learning | Robinhood | null | no | no | 0 |
How can we predict if a person is churning? | Data Science | Robinhood | null | no | no | 0 |
How can you compute the overall capital gain/loss in a set of transactions? | Data Science | Robinhood | null | no | no | 0 |
How comfortable are you with statistics and using them in your work? | Data Science | Robinhood | null | no | no | 0 |
How could you figure out how spending on a billboard was working with multiple other variables at play? | Data Science | Robinhood | null | no | no | 0 |
How could you figure out that spending on a billboard was working with multiple other variables at play. | Data Science | Robinhood | null | no | no | 0 |
How did you approach defining metrics in the case study? | Data Science | Robinhood | null | no | no | 0 |
How do we measure the launch of Robinhoods fractional shares program? | Data Engineer | Robinhood | null | no | no | 0 |
How do we measure the launch of Robinhoods fractional shares program? | Data Science | Robinhood | null | no | no | 0 |
How do you address multicollinearity in regression models? | Data Science | Robinhood | null | no | no | 0 |
How do you approach cleaning and preprocessing large datasets? | Data Analytics | Robinhood | null | no | no | 0 |
How do you approach data visualization and what tools do you prefer? | Data Analytics | Robinhood | null | no | no | 0 |
How do you compute the new objective function? | Machine Learning | Robinhood | null | no | no | 0 |
How do you deal with an unbalanced binary classification when analyzing a data set? | Data Science | Robinhood | null | no | no | 0 |
How do you define good investors? | Data Science | Robinhood | null | no | no | 1 |
How do you define good investors? How do you identify them? | Data Science | Robinhood | null | no | no | 1 |
How do you ensure that your data analysis is aligned with business goals and objectives? | Data Analytics | Robinhood | null | no | no | 0 |
How do you handle missing or incomplete data in your analyses? | Data Analytics | Robinhood | null | no | no | 0 |
How do you identify them? | Data Science | Robinhood | null | no | no | 0 |
How do you interpret the coefficients of a logistic regression model? | Data Science | Robinhood | null | no | no | 0 |
How do you prioritize and manage multiple data analysis projects simultaneously? | Data Analytics | Robinhood | null | no | no | 0 |
How do you stay current with the latest trends and advancements in data analysis? | Data Analytics | Robinhood | null | no | no | 0 |
How does a random forest reduce overfitting and correlation between trees? | Machine Learning | Robinhood | null | no | no | 0 |
How does K-means clustering work? | Machine Learning | Robinhood | null | no | no | 0 |
How does the bias-variance tradeoff in machine learning work, and have you ever seen this tradeoff become evident in the outcomes of a model? | Machine Learning | Robinhood | null | no | no | 0 |
How is PCA implemented? | Machine Learning | Robinhood | null | no | no | 0 |
How well do you know Robinhood? | Data Science | Robinhood | null | no | no | 0 |
How would the ROC curve change? If it doesnt change, what kinds of functions would change the curve? | Machine Learning | Robinhood | null | no | no | 0 |
How would you AB test our program of giving out free stocks to new signups? | Data Science | Robinhood | null | no | no | 1 |
How would you AB test the program of giving out free stocks to new signups? | Data Science | Robinhood | null | no | no | 1 |
How would you address covariate imbalance in a dataset? | Data Science | Robinhood | null | no | no | 0 |
How would you approach measuring the success of X new feature | Data Science | Robinhood | null | no | no | 1 |
How would you build a fraud detection model with a text messaging service for transaction approval? | Data Engineer | Robinhood | null | no | no | 0 |
How would you build a model to calculate a customers propensity to buy a particular item? What are some pros and cons of your approach? | Machine Learning | Robinhood | null | no | no | 0 |
How would you calculate seat availability in a theater using two tables? | Data Science | Robinhood | null | no | no | 0 |
How would you define and identify a good investor on a platform like Robinhood? | Data Science | Robinhood | null | no | no | 0 |
How would you design a data warehouse schema for efficient querying and analysis purposes? | Data Engineer | Robinhood | null | no | no | 0 |
How would you design a machine learning system to identify good investors on Robinhood? | Data Engineer | Robinhood | null | no | no | 0 |
How would you design a scalable and cost-effective architecture for processing and storing large volumes of data in the cloud? | Data Engineer | Robinhood | null | no | no | 0 |
How would you design a schema for a specific business use case, considering factors like data volume, query performance, and data relationships? | Data Engineer | Robinhood | null | no | no | 0 |
How would you determine if spending on a billboard was effective amidst other marketing variables? | Data Science | Robinhood | null | no | no | 0 |
How would you ensure data security during data ingestion, storage, and processing? | Data Engineer | Robinhood | null | no | no | 0 |
How would you fix the model in case of a data quality issue where decimal points were removed from some values? | Data Science | Robinhood | null | no | no | 0 |
How would you handle data quality issues and ensure data integrity in a pipeline? | Data Engineer | Robinhood | null | no | no | 0 |
How would you identify synonyms? | Machine Learning | Robinhood | null | no | no | 0 |
How would you improve the app's Watchlist? | Data Science | Robinhood | null | no | no | 0 |
How would you optimize and tune a Spark job for performance? | Data Engineer | Robinhood | null | no | no | 0 |
If you receive an offer from Robinhood, how long do you think you'll stay here? | Data Science | Robinhood | null | no | no | 0 |
In a machine learning problem, if you have a high-dimensional dataset, how would you go about handling it? | Machine Learning | Robinhood | null | no | no | 0 |
In order to improve user retention and lower churn, the growth team at Robinhood is interested in understanding why and which users withdraw money from their Robinhood account. A user is considered churned when their equity value (amount of money in Robinhood account) falls below $10 for a period of 28 consecutive cale... | Data Science | Robinhood | null | no | no | 0 |
In what ways do batch normalisation and instance normalisation differ? | Data Science | Robinhood | null | no | no | 0 |
In which real-world scenarios do overfitting and underfitting tend to occur? How do these occurrences affect the accuracy and performance of the model? | Machine Learning | Robinhood | null | no | no | 0 |
Is a logistic model still valid if a key variable has data quality issues? | Data Engineer | Robinhood | null | no | no | 0 |
Is your classifier able to discriminate between fraud and not-fraud effectively? | Machine Learning | Robinhood | null | no | no | 0 |
Predict user churning based on user balance account and trading activity | Data Science | Robinhood | null | no | no | 0 |
Say we are running a probabilistic linear regression which does a good job modeling the underlying relationship between some y and x. Now assume all inputs have some noise added, which is independent of the training data. What happens? | Machine Learning | Robinhood | null | no | no | 0 |
Show mathematically that the decision boundaries are linear for linear discriminant analysis (LDA). | Machine Learning | Robinhood | null | no | no | 0 |
Show that in the setup of a linear regression model where the error terms are normally distributed, maximizing the likelihood of the data is equivalent to minimizing the sum of squared residuals. | Machine Learning | Robinhood | null | no | no | 0 |
sql coding exercise: calculating seat availability on plane given two tables SEATS and PLANE. | Data Science | Robinhood | null | no | no | 0 |
Tax Basis It's tax season! Given a set of transactions, find out the cost basis for each sell and compute the overall capital gain/loss. | Data Science | Robinhood | null | no | no | 0 |
Tell me about a time when you were given the freedom to explore a business problem with very few parameters. What was your initial approach to attacking this project? | Data Science | Robinhood | null | no | yes | 0 |
what are false negatives | Machine Learning | Robinhood | null | no | no | 0 |
What are some cost functions you might consider for a linear regression model when some sensors are prone to complete failure? | Machine Learning | Robinhood | null | no | no | 0 |
What are some of the differences between a histogram and a box plot? | Data Science | Robinhood | null | no | no | 0 |
What are some ways you might improve your model or what other models might you look into? | Machine Learning | Robinhood | null | no | no | 0 |
What are the differences between OLTP (Online Transaction Processing) and OLAP (Online Analytical Processing) databases? | Data Engineer | Robinhood | null | no | no | 0 |
What are the different types of data models (e.g., relational, dimensional, NoSQL) and when would you use each? | Data Engineer | Robinhood | null | no | no | 0 |
What are the optimization strategies you're versed in, and can you summarize their operation? | Machine Learning | Robinhood | null | no | no | 0 |
What are the three components of error in modeling? | Machine Learning | Robinhood | null | no | no | 0 |
what are the trade-offs between them in terms of dollars and how should the model be weighted accordingly? | Machine Learning | Robinhood | null | no | no | 0 |
What are the two properties of ideal clustering? | Machine Learning | Robinhood | null | no | no | 0 |
What are the two types of models for classification? | Machine Learning | Robinhood | null | no | no | 0 |
What criteria would you use to determine whether Robinhood should roll out push notifications for market openings to all users? | Data Engineer | Robinhood | null | no | no | 1 |
can you provide a dynamic range in the data source for a pivot table? | Data Analytics | Salesforce | null | no | no | 0 |
create a view in tableau to analyze the sales, profit, and quantity sold across different subcategories of items present under each category. | Data Analytics | Salesforce | null | no | no | 0 |
describe a situation where you had to go above and beyond to get the data you needed to make a decision. | Data Analytics | Salesforce | null | no | yes | 1 |
describe a time when you had to explain your findings in a way that was both simple and accurate. | Data Analytics | Salesforce | null | no | yes | 0 |
describe a time when you had to explain your findings in terms that were both simple and accurate. | Data Analytics | Salesforce | null | no | yes | 0 |
describe a time when you had to explain your findings to someone who was not familiar with data analysis. | Data Analytics | Salesforce | null | no | yes | 0 |
describe a time when you had to present your findings in a way that was both convincing and compelling. | Data Analytics | Salesforce | null | no | yes | 1 |
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