indicator

An indicator is a tool or signal used to measure, evaluate, or monitor specific information or conditions. It helps identify trends, patterns, or changes in a particular area—such as the economy, health, or performance—by providing data that can be analyzed. For example, a stock market index indicates overall market health, while a healthcare indicator might show rates of a particular disease. Indicators are essential for making informed decisions, setting policies, or tracking progress toward goals, as they translate complex information into understandable and actionable insights.