This is the probability mass function of the Poisson distribution with expected value & lambda;.
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In cosmology, the "'halo mass function "'is a mass distribution of dark matter halos per mass interval.
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But you can use the probability mass function and cumulative density functions to make it a bit easier.
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For discrete random variables, probability mass functions can be considered density functions with respect to the counting measure.
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Where it is differentiable, the derivative is zero, just as the probability mass function is zero at all such points.
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Following the parametrized probability mass function used to calculate the maximum likelihood estimator, is important to corroborate the following hypothesis,
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As a Bayesian network defines a joint probability mass function over its variables, a credal network defines a joint credal set.
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The probability of getting exactly " k " successes in " n " trials is given by the probability mass function:
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Additional parameters are the mass function " J2 ", the correspondent gravity formula, and the rotation period ( usually 86164 seconds ).
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Binomial probability mass function and normal probability density function approximation for " n " = 6 and " p " = 0.5
