`"E(X)" = n * p `

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The Binomial Distribution Expected Value calculator computes the expected value based on the success rate (p) and the number of trials (n).

INSTRUCTIONS: Enter the following:

• (p) This is the success rate
• (n)  This is the number of trials.

Expected Value: The calculator returns the expected value.

Related Calculators:

• Pascal Distribution Expected Value
• Geometric Expected Value
• Binomial Distribution Expected Value
• Bernoulli Distribution Expected Value
• Geometric Distribution Expected Value
• Discrete Uniform Expected Value
• Hyper-geometric Distribution Expected Value

The Math / Science

 In probability theory, the expected value (often noted as E(x)) refers to the expected average value of a random variable one would expect to find if one could repeat the random variable process a large number of time. In other words, the expected value is a weighted average of all possible values in the experiment.

The expected value of a binomial experiment is equal to `n * p` which is the number of Bernoulli trials multiplied by the number of successes.  

Variables:

• `n` = Number of Trials
• `p` = Success Rate

Equation:

E(x) = n * p