In mathematics education product reviews, which statistical method is most commonly used to identify hidden sentiment patterns across large volumes of customer feedback?

In the world of mathematics education products, customer reviews provide valuable insights for improvement and innovation. Understanding the statistical patterns behind these reviews can help companies make data-driven decisions. This trivia question explores a key mathematical concept used in analyzing product review sentiment that helps mathematics education companies optimize their offerings.

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Principal Component Analysis (PCA)
Latent Dirichlet Allocation (LDA)
Ordinary Least Squares Regression
K-means Clustering