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where
n | is the sample size. |
x | is the point of interest; that is, the PROBMED function calculates the probability that the median is less than or equal to x. |
Let n represent the sample size and X(i) represent the ith order statistic. Then, when n is odd, the function calculates
where
where B and and are the standard normal cumulative distribution function and density function, respectively.
For more information, refer to David (1981).
data; b=probmed(5,-0.1); put b; run;
result in a value of 0.4256380897.
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