MCQ
In frequency modulated wave ______.
- ✓frequency varies with time
- Bboth frequency and amplitude vary with time
- Camplitude varies with time
- Dboth frequency and amplitude are constant
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| X = k | 0 | 1 | 2 | 3 | 4 |
| P(X = k) | 0.1 | 0.4 | 0.3 | 0.2 | 0 |
The variance of X is ______