Which mathematical/statistical technique revolutionized retail analytics by allowing stores to identify hidden patterns in large customer datasets and create more effective market segmentation?

Modern retailers increasingly rely on mathematical models to gain competitive advantages. Advanced analytics have revolutionized how stores understand customer behavior, optimize inventory, and personalize marketing. This trivia question explores a significant mathematical innovation that transformed retail data analysis and decision-making processes.

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Cluster analysis
Simplex algorithm
Fourier transforms
Markov chains