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Thread: Symbol for Mean of Probability Distribution

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    Question Symbol for Mean of Probability Distribution




    “mu” is the symbol for the mean of a population, “x-bar” is the symbol for the mean of a sample, and “mu of x-bar” is the symbol for the mean of the sampling distribution.

    What is the symbol for the mean of a probability distribution?

    Thank you.

    Dr. T

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    Re: Symbol for Mean of Probability Distribution


    Typically we talk about probability distributions by assigning them to a random variable. So if X ~ F(x) (arbitrary distribution) then you could refer to the mean using the expectation operator applied to the random variable E[X]. Sometimes people might go ahead and call that \mu. Just define your notation and you should be fine.
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