Honest averages
Choose mean, median or mode so outliers can't mislead your report.
Data Analysis Essentials
The everyday superpower. Describe datasets with real statistics, clean the messy values every spreadsheet hides, group and total by category, rank the top performers, and ship an insight report — pure Python, the same moves you'd later make in pandas.
Real work, not toy syntax
What this course helps you build
Each lesson connects the Python concept to work you could automate, analyse or ship.
Messy CSV rescue
Strip, convert and quarantine bad values without crashing the run.
Category totals
Group revenue, signups or errors by key — pure-Python GROUP BY.
Top-N leaderboards
Rank best sellers and slowest pages with sorted, keys and slices.
Course roadmap
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1
Start →
Describing Data: Mean, Median & Mode
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2
Start →
Cleaning Messy Data
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3
Start →
Grouping: Totals by Category
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4
Start →
Rankings: Top-N with sorted & max
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5
Start →
Capstone: From Raw Rows to Insight Report
You can take every lesson without an account — but create a free account to save progress, earn XP and unlock achievements.