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sergeinik [125]
4 years ago
15

A random variable x is uniformly distributed over the interval (-4, 6). Find the standard deviation of x. (Note: Uniform distrib

ution is a distribution where the PDF value is the same across all x values)
Mathematics
1 answer:
Pachacha [2.7K]4 years ago
3 0

Answer:

The standard deviation of x is 2.8867

Step-by-step explanation:

The standard deviation of variable x that follows a uniform distribution is calculated as:

s = \sqrt{\frac{(b-a)^{2} }{12} }

Where (a,b) is the interval where x is defined.

So, replacing a by -4 and b by 6, the standard deviation is:

s = \sqrt{\frac{(6-(-4))^{2} }{12} }

s = \sqrt{\frac{(10)^{2} }{12} }

s=\sqrt{\frac{100}{12} }

s=\sqrt{8.3333}

s=2.8867

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