Programmer Guide/Command Reference/EVAL/median: Difference between revisions
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---- | ---- | ||
;Usage 1: '''median(''x''<sub>vector</sub> {, ''p''<sub>scalar</sub> })''' | ;Usage 1: <code>'''median(''x''<sub>vector</sub> {, ''p''<sub>scalar</sub> })'''</code> | ||
;''x'': data vector | ;''x'': data vector | ||
;''p'': the propability; 0 < ''p'' < 1 (default=0.5) | ;''p'': the propability; 0 < ''p'' < 1 (default=0.5) | ||
;Result 1: Returns the ''p''-quantile (scalar) of ''x''. | ;Result 1: Returns the ''p''-quantile (scalar) of ''x''. | ||
---- | ---- | ||
;Usage 2: '''<code>median(''x''<sub>vector</sub> , ''p''<sub>vector</sub> })''' | ;Usage 2: '''<code>median(''x''<sub>vector</sub> , ''p''<sub>vector</sub> })</code>''' | ||
;''x'': data vector | ;''x'': data vector | ||
;''p'': vector with propability values | ;''p'': vector with propability values | ||
Revision as of 16:46, 8 April 2011
Compute median or quantiles of a vector x.
The quantile qp can be defined as the probability p such that an element of x is lower than qp. The value p must be in the range 0 to 1. The special quantile q0.5 is also called median.
- Usage 1
median(xvector {, pscalar })- x
- data vector
- p
- the propability; 0 < p < 1 (default=0.5)
- Result 1
- Returns the p-quantile (scalar) of x.
- Usage 2
median(xvector , pvector })- x
- data vector
- p
- vector with propability values
- Result 1
- Returns a vector containing the quantiles for all probabilities p[i].
