Which mathematical concept has been shown to most accurately model the relationship between advertising spend and diminishing returns in retail marketing campaigns?

Marketing analytics in retail has evolved significantly with mathematical models driving decision-making. One particular mathematical concept has proven remarkably effective in predicting consumer behavior patterns across different demographic segments. This poll tests your knowledge of how advanced mathematical principles are being applied to transform retail customer analytics and drive data-informed marketing strategies.

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Logarithmic decay functions
Fibonacci sequence mapping
Linear regression models
Quadratic optimization curves