Welcome to Day 4 of the 21-Day Power BI DAX Challenge with Pavan Lalwani!

In this challenge, we solve a practical analytics question:
“Which product category has the highest number of products?”

Haven’t joined the challenge yet?
Enroll now to access datasets, daily problems & bonus gifts:
https://learn.pavanlalwani.com/s/pages/21-days-dax-challenge

In this video, you’ll learn:
How to count products per category
1. Use ADDCOLUMNS, CALCULATE, and COUNTROWS
2. Apply MAXX to find the highest product count
3. Use LOOKUPVALUE to fetch the category name
4. How to tweak logic to get lowest instead of highest

This is an essential use case for analysts and BI developers, especially when working with category-level aggregations and virtual tables.

Plus: Get a sneak peek into Challenge 5 at the end!

Want to learn more?
Master DAX with our Advanced Power BI DAX Course →
https://learn.pavanlalwani.com/courses/Microsoft-Power-BI-DAX-686b9f59bd8e322a4efb3109
Power BI course: https://learn.pavanlalwani.com/courses/Power-BI-Specialization-63a05686e4b0a7b1ab4dfc8d

⏱ Timestamps:
0:08 – Challenge 4: Category with most products
0:21 – Creating a table with category + product names
0:51 – Using COUNT to check product distribution
1:14 – Need to return just one top category
1:35 – Creating virtual table using ADDCOLUMNS
2:36 – Using CALCULATE + COUNTROWS for product count
3:14 – Applying MAXX to find highest product count
4:15 – Filtering to get only the top row
5:28 – Using LOOKUPVALUE to return category name
6:25 – Final output: Laptops
6:50 – Replacing MAXX with MINX for lowest
7:17 – Challenge 5 preview: Avg price of discontinued products


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