This document discusses approaches for measuring marketing productivity, including marketing metrics and marketing-mix modeling. It describes four key tools for measuring marketing plan performance: sales analysis, market share analysis, marketing expense-to-sales analysis, and financial analysis. Sales analysis involves measuring actual sales against goals. Market share analysis examines a company's performance compared to competitors. Marketing expense-to-sales analysis analyzes key expense ratios. Financial analysis reviews financial ratios to understand performance. Marketing-mix modeling sees the 4Ps (product, price, place, promotion) financially and analyzes the effects of different marketing activities.