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- TITLE(symplot @@ Produce a Symmetry Plot)
- USAGE(
- symplot(vec)
- )
- ARGUMENTS(
- ARG(vec @@ a numeric vector.)
- )
- DESCRIPTION(
- The symmetry plot is based on the fact that for symmetric distributions
- the distance between the median and EQN(greekalpha)-th quantile is the same as
- the distance between the median and the EQN(1 - greekalpha)-th quantile.
- The function produced a plot of
- EQN(median - SUB(q,greekalpha)) versus
- EQN(SUB(q,{ ( 1 - greekalpha ) }) - median) for EQN(greekalpha)
- between 0 and 0.5.
- If the distribution underlying the data is symmetric,
- the points in this plot should fall close to the 45 degree line.
- Large deviations from the 45 degree line indicate a lack of symmetry.
- )
- EXAMPLES(
- symplot(rnorm(10))
- )
-