Percentile
In plain terms
A value below which a given percent of data falls.
Going deeper
A percentile indicates the value under which a percentage of observations lie, like the 95th percentile latency. It describes distribution, not just averages.
Under the hood
Tail percentiles (p95, p99) reveal worst-case experience that averages mask.
Examples
p50/p95/p99 latency, SLOs, performance analysis, distributions.
Think of it like...
Like a test score saying you did better than 95% of takers.