Math Is Fun Forum

Angel Rox

Member

Registered: 2008-11-10

Posts: 15

Probabilty Distribution

Let X represents the spot on a die,
Find the probability distribution of X and variance (σ^2 x = Var (x))

need some hints in this one ... Thanx in advance

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Probabilty Distribution

S = {1,    2,   3,   4,   5,   6}

X = {1/6,1/6,1/6,1/6,1/6,1/6}

E is the expectation or expected number, S is the sample space X is the prob distribution for S and it is a uniform distribution.

The standard deviation is done by the formula, then just take the square of the standard deviation.

Last edited by bobbym (2009-06-21 03:39:24)

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