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Functions |
PROBMED Function |
computes cumulative probabilities for the sample median.
PROBMED
where
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is the sample size. |
|
is the point of interest; that is, the PROBMED function calculates the probability that the median is less than or equal to |
The PROBMED function computes the probability that the sample median is less than or equal to for a sample of
independent, standard normal random variables (mean 0, variance 1).
Let represent the sample size and
represent the
th order statistic. Then, when
is odd, the function calculates
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where
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and B, where
is the gamma function. If
is even, the PROBMED function calculates
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where B and
and
are the standard normal cumulative distribution function and density function, respectively.
For more information, refer to David (1981).
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