Step 1: Recall definitions of statistical terms.
Step 2: Match the definition to the problem.
The difference between the maximum and minimum observations is called the range.
Final Answer: The correct term is \( \mathbf{\text{range}} \), which corresponds to option \( \mathbf{(4)} \).
| x | 5 | 10 | 15 | 20 | 25 |
| f | 6 | 8 | 6 | y | 5 |
| x | Less than 10 | Less than 20 | Less than 30 | Less than 40 | Less than 50 | Less than 60 |
| f | 3 | 12 | 27 | 57 | 75 | 80 |
| Class Interval | 0-20 | 20-40 | 40-60 | 60-80 | 80-100 |
|---|---|---|---|---|---|
| Number of Students | 15 | 18 | 21 | 29 | 17 |