Which statistical method is most commonly used by leading mathematics learning platforms to analyze customer feedback for product improvement?

In the world of mathematics education products and e-commerce, companies use sophisticated algorithms to enhance learning experiences. These algorithms are designed to adapt to individual learning styles, track progress, and recommend appropriate mathematical challenges. Test your knowledge about how math learning platforms utilize customer feedback to optimize their products!

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Natural Language Processing (NLP) with sentiment analysis and topic modeling
Simple arithmetic mean of numerical ratings
Random Forest classification without text analysis
Binary classification of only positive vs. negative feedback