Percentiles
Percentiles are statistical measures that indicate the value below which a given percentage of observations in a dataset fall. For example, the 50th percentile (median) is the value where 50% of the data points are lower and 50% are higher. They are widely used in data analysis, performance benchmarking, and reporting to understand distributions and compare values relative to a dataset.
Developers should learn percentiles when working with data-intensive applications, such as analyzing system performance metrics (e.g., response times, latency), user behavior analytics, or financial data. They are essential for identifying outliers, setting service-level objectives (SLOs), and making data-driven decisions in fields like DevOps, data science, and business intelligence.