Data interviews seem to be evolving fast. It’s no longer just SQL or case studies, now it’s system thinking, real-world problem solving, and even communication.

At the same time, a lot of candidates still feel uncertain going in.

From what you’ve seen:

• What’s actually being tested today?
• And what do candidates tend to worry about the most?

Would be interesting to hear both interviewer and candidate perspectives

I am working with a pandas DataFrame and trying to sort a numeric column (trip_distance) in descending order.

However, I receive a NameError: name 'trip_distance' is not defined when using:

trip = sorted(trip_distance)
print(trip)

The column exists inside my DataFrame (e.g., df).

I would like clarity on:

• Why this NameError occurs

• The correct way to sort a DataFrame column in descending order

• When to use sorted() versus DataFrame.sort_values()

Any guidance on best practices for sorting columns in pandas would be appreciated.

A large customer-facing enterprise receives thousands of unstructured text inputs every day across emails, chat support, social media comments, and internal tickets. These messages include complaints, feature requests, sentiment signals, and operational issues. Currently, most of this data is reviewed manually or sampled periodically, leading to delayed insights and reactive decision-making.

Leadership wants to use Natural Language Processing (NLP) to turn this continuous stream of text into timely, actionable intelligence that can influence product decisions, customer experience improvements, and operational prioritization.

The Challenge
Despite having access to large volumes of text data, the organization struggles with:

• Identifying emerging issues early

• Understanding true customer sentiment beyond surface-level metrics

• Converting qualitative feedback into structured insights leaders trust

ChatGPT has gone beyond being a conversational tool it’s now becoming a true AI collaborator.
For data professionals, it’s accelerating everything from exploratory data analysis to model documentation and storytelling.

What used to take hours cleaning data, summarizing insights, generating reports can now be guided or even automated with prompts.

But what’s even more interesting is the shift in focus: data experts are spending less time coding repetitive tasks and more time designing better questions, interpreting outcomes, and aligning AI outputs with business goals.
This raises an important question  are we moving toward a future where data professionals are AI conductors rather than data crunchers?

Imagine asking natural-language questions like “What’s driving churn among enterprise clients this quarter?” and getting instant, contextual insights from your internal data systems.
That’s where tools like ChatGPT are heading  becoming a unified conversational layer across BI platforms, analytics warehouses, and predictive models.

The potential is massive, but so are the challenges: data privacy, model alignment, and interpretability.
If ChatGPT becomes the new front-end for enterprise intelligence, how do we ensure it remains trustworthy, explainable, and unbiased?