# Find the Expectation table[[x,P(x)],[one hundred thirty-eight , three],[one hundred seventy-one , two],[two hundred fifty-nine , three],[three hundred eleven , six],[three hundred fifty-two , two]]

A discrete random variable takes a set of separate values (such as , , ...). Its probability distribution assigns a probability to each possible value . For each , the probability falls between and inclusive and the sum of the probabilities for all the possible values equals to .

1. For each , .

2. .

is not less than or equal to , which doesn't meet the first property of the probability distribution.

is not less than or equal to

is not less than or equal to , which doesn't meet the first property of the probability distribution.

is not less than or equal to

is not less than or equal to , which doesn't meet the first property of the probability distribution.

is not less than or equal to

is not less than or equal to

is not less than or equal to

The probability does not fall between and inclusive for all values, which does not meet the first property of the probability distribution.

The table does not satisfy the two properties of a probability distribution

The table does not satisfy the two properties of a probability distribution

The table does not satisfy the two properties of a probability distribution, which means that the expectation mean can't be found using the given table.

Can't find the expectation mean

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