Archive - Tech Growth Series: PrepVector

Choosing the Right Causal Inference Method

A practical guide for data scientists on mapping real-world business problems to the right causal inference framework — from experiments to…

Sep 30 •

Recap of PrepVector's A/B Testing Weekend Workshop

A deep dive into our A/B Testing Weekend Workshop—key learnings, mentor insights, and how experimentation transforms data scientists into strategic…

Sep 25 •

The Myth of Feeling Ready in Your Career

Most of us fall into the trap of waiting until we feel ready. The truth? Readiness is not a starting point, it’s the outcome of taking small steps…

Sep 18 •

The Future of Data Science Interviews: What You Need to Know for 2025 and Beyond

Discover how data science interviews are evolving in 2025. Prepare for the skills and formats that will define success.

Sep 17 •

We’re Collaborating with StrataScratch — Here’s Why It’ll Change Your Data Career

PrepVector is partnering with Stratascratch to help data professionals strengthen programming skills and build analytical problem solving.

Sep 2 •

August 2025

Solving the problem of multiple profiles per user - Part 1

Learn how Product Data Scientists solve real-world business challenges through data-driven insights, with a practical example of tackling the issue of…

Aug 15 •

and

July 2025

A Practical Guide to Difference-in-Differences — A 5-Part Series Summary

A quick recap of our 5-part series on Difference-in-Differences — from intuition to implementation and robustness checks. A practical guide for applying…

Jul 31 •

and

Banani Mohapatra

From Metrics to Decisions: The Role of a Product Data Scientist

Product Data Scientists do more than track metrics. They influence what gets built and why. This blog explores their role in strategy, experimentation…

Jul 30 •

and

Banani Mohapatra

Part 4: Running Robustness Checks in Diff-in-Diff

In this post, we walk through key robustness checks—from outlier analysis to placebo tests and diagnostics—to ensure your causal claims stand on solid…

Jul 25 •

and

Banani Mohapatra

Part 3B: Measuring the Impact of Free Shipping: a Diff-in-Diff Case Study

Using Difference-in-Differences, we estimate the true causal impact of offering free shipping—beyond assumptions and surface-level metrics.

Jul 23 •

and

Banani Mohapatra

LangGraph in Action: Building Complex, Stateful Agent Workflows - Part 4

Learn how to build complex, stateful agent workflows with LangGraph—featuring loops, memory, and dynamic routing.

Jul 22 •

and

AutoGen Unpacked: Conversational Multi-Agent Collaboration for AI Workflows - Part 3

In Part 3 of the AutoGen series, we dive into how multiple AI agents can collaborate seamlessly through structured conversation.

Jul 17 •

and

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