A group of students investigated the effect of caffeine on reaction time. The table below shows the reaction times of five students after drinking a caffeinated beverage.
| Student | Reaction time (s) |
|---|---|
| Student A | 0.315 |
| Student B | 0.282 |
| Student C | 0.495 |
| Student D | 0.298 |
| Student E | 0.264 |
Give the mathematical term used to describe the reaction time value of Student D.
