Definitions
| Measure | Definition |
|---|---|
| Mean | Sum of all values ÷ count |
| Median | Middle value when sorted |
| Mode | Most frequently occurring value(s) |
| Range | Max − Min |
Example
Data: 2, 4, 4, 6, 8
Mean = (2+4+4+6+8)/5 = 24/5 = 4.8
Median = 4 (middle of sorted list)
Mode = 4 (appears twice)
Range = 8 − 2 = 6