Which mathematical technique revolutionized retail inventory management by reducing the 'bullwhip effect' in supply chains?

Mathematics has transformed modern retail through advanced analytics and big data applications. Today's retail giants employ sophisticated mathematical models to optimize everything from inventory management to personalized promotions. This poll tests your knowledge about how mathematical innovations have revolutionized retail data analytics and created competitive advantages for companies that effectively leverage these tools.

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Time Series Forecasting using Autoregressive Integrated Moving Average (ARIMA) models
Linear Regression Analysis using Ordinary Least Squares (OLS)
Bayesian Network Analysis with Monte Carlo simulations
Principal Component Analysis (PCA) for dimensionality reduction