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Given a set of (date, duration) tuples, how would you filter by a specific date range and then compute the average duration and rolling sum for each date within that range?

Please tell me a time when you delivered above and beyond what was expected

Can you describe why you would be a good fit for Coursera?

Could you give a brief overview of the concept of heteroscedasticity?

What do the training and loss graphs imply for a neural network? How do various loss functions affect the shape of the loss graph, and what are some commonly employed ones? Can you discuss the dissimilarities between the training and loss graphs, and how they aid in model optimization and performance?

What SQL expression would you use to find rows in a database where the names begin with 'H'?

How does DBSCAN differ from other clustering algorithms?

What steps would you take to enhance the speed of an inefficient SQL query?

Could you provide an explanation for what the X and Y axes of a ROC curve stand for and how they relate to interpreting results?

How would you describe yourself and why do you think that you should be hired by Coursera?