Converting Thumbs-Up/Thumbs-Down to Percentiles with Skewness Intact

With Amazon Book Reviews in Python

Corey Wade
Towards Data Science
7 min readOct 16, 2018

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The thumbs-up/thumbs-down metric has become very popular. It’s used on YouTube, Amazon and other sites to obtain user and product information. The metric is simple, useful and inviting.

When I search toddler videos for my daughter, I get videos with 500,000…

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Teaches Python, Data Science, Machine Learning & AI to teens at Berkeley Coding Academy. Author of The Python Workshop & Hands-on Gradient Boosting with XGBoost