Effect of operations (NF)
A standard method from Measures of dispersion: the steps.
Steps
| Every item | Range, IQR, SD | Variance |
|---|---|---|
| + c | unchanged | unchanged |
| × k (k > 0) | × k | × k² |
Want to check an answer? Standard deviation calculator shows every step.
For the whole topic, read Measures of dispersion: key points, common mistakes and how the DSE tests it.