Question

Write mean
and variance of discreate distribution​

Answer 1

Answer:

The mean of a discrete random variable X is a weighted average of the possible values that the random variable can take. Unlike the sample mean of a group of observations, which gives each observation equal weight, the mean of a random variable weights each outcome xi according to its probability, pi. The common symbol for the mean (also known as the expected value of X) is , formally defined by

The mean of a random variable provides the long-run average of the variable, or the expected average outcome over many observations.

Step-by-step explanation:

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Answer 2

Answer:

(UNIFORM DISTRIBUTION MEAN)

µ(X; n) = n-1 / 2

Step-by-step explanation:

Discrete Uniform Distribution

>The discrete uniform distribution occurs when there are a finite number (m) of equally likely outcomes possible. The prf of a uniform discrete random variable X is:

p(x)=1/m, where x=1.2....m

> The mean and vanance of a discrete uniform random variable X are:

► Video +1)/2

*O² = (m²-1) / 12