Intro to Data Science · Analysis · Lesson 10 of 12
Sorting and Ranking
Concept
Sorting and Ranking
sort_values() reorders rows by a column, useful for finding top or bottom performers in a dataset.
By the end of this lesson
- Explain the core idea behind Sorting and Ranking.
- Predict output before running a change.
- Test one realistic and one unusual input.
- Use the result to make the next decision.
How to study this page
- 1. Read one concept.
- 2. Change the example.
- 3. Run, compare, and explain.
- 4. Complete the challenge below.
Self-check before continuing
Without looking at the example, describe what changes when you modify one input in Sorting and Ranking. Then reopen the editor and prove your explanation with a small test.
You are ready to continue when you can predict, test, and explain the result.
Your turn
Write code that finds the 3 lowest scores in a dataset.
Need a nudge?
Ask about this lesson or your next move. The guide explains the path without taking the work away from you.
Ready for the next lesson?
Mark this lesson complete when you have finished the exercise.
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