Good. I probably should have known that already, thus why I had to do some statistical analysis outside of DHIS2 to actually calculate reasonable min max. A quick check of the validity of a normal distribution, can be with the skewness and kurtosis , which provide a idea of how "tilted" a given distribution is.
https://www.dhis2.org/doc/snapshot/en/developer/html/apas06.html Anyway, support for import via the API would be good. Regards, Jason On Mon, Apr 20, 2015, 16:06 Lars Helge Øverland <larshe...@gmail.com> wrote: > Hi there, > > Calle is right here - we do average, then calculate std dev and set the > upper and lower bounds for each value. > > We use data from ALL available time periods to calculate this (period org > unit, data element, option combo) > > Mind you we should not really debate whether to use standard deviations or > not, rather if we should support additional _distributions_ to better > handle different kinds of data. We currently use the normal distribution > <http://en.wikipedia.org/wiki/Normal_distribution>. > > Rodolfo - supporting min-max in the Web API is a good idea to allow for > third-party tools - feel free to write a blueprint. > > regards, > > Lars > > > > > >
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