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  • Mechanical Engg. (GATE) 2006
  • Consider a continuous random variable with probability de...
Multiple choice

Consider a continuous random variable with probability density function as follows. f (t) = 1 + t for - 1 $\leq$ t $\leq$ 0 = 1 - t for 0 $\leq$ t $\leq$ 1 The standard deviation of the random variable is

  1. $\frac{1}{\sqrt{3}}$
  2. $\frac{1}{\sqrt{5}}$
  3. $\frac{1}{3}$
  4. $\frac{1}{6}$
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B Correct answer
Explanation

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