Indices, or indicators, are statistical measures that represent the performance or status of a specific area, such as the economy, health, or environment. They help simplify complex data into understandable figures, making it easier to track changes over time. Common examples include the Consumer Price Index (CPI), which measures inflation, and the Human Development Index (HDI), which assesses a country's social and economic development. These indicators are often used by policymakers, researchers, and businesses to make informed decisions. By analyzing indices, stakeholders can identify trends, compare different regions or groups, and evaluate the effectiveness of policies or programs.