Civil Engineering > GATE 2025 SET-2 > Probability and Statistics
Consider a discrete random variable X whose probabilities are given below. The standard deviation of the random variable is ______ (round off to one decimal place).
| Xi | 1 | 2 | 4 | 8 |
| P(X=xi) | 0.3 | 0.1 | 0.3 | 0.3 |
Correct : 2.4
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