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Talk:Finding relations between variables in time series (edit)
Revision as of 02:45, 28 March 2023
, 02:45, 28 March 2023→new section : single variable validity: new section
Collection is really just a matter of finding the right devices and taking the time to use them. Analysis outside of immediate obvious effect can become difficult. If the effect is subtle and drowned in other effects, or hard to measure. If the intervention is not something user can easily or wants to reproduce. If the effect take long time to build up, or is shifted in time from intervention. If the successful effect only happens under several conditions or several interventions together. If the spray and pray approach is dangerous. If the spray and pray approach only hits gold once in a while. Multiple comparison problem (see wikipedia). If user is bad at keeping records. There are probably more. There are many many apps that just do correlation and none that do anything more. Here is a list of both problems and apps.
Collection is really just a matter of finding the right devices and taking the time to use them. Analysis outside of immediate obvious effect can become difficult. If the effect is subtle and drowned in other effects, or hard to measure. If the intervention is not something user can easily or wants to reproduce. If the effect take long time to build up, or is shifted in time from intervention. If the successful effect only happens under several conditions or several interventions together. If the spray and pray approach is dangerous. If the spray and pray approach only hits gold once in a while. Multiple comparison problem (see wikipedia). If user is bad at keeping records. There are probably more. There are many many apps that just do correlation and none that do anything more. Here is a list of both problems and apps.
== new section : single variable validity ==
how to prove that what you are measuring really is what you are trying to measure. aka construct validation
quick way; compare to a scientifically validated standard.
also consider en.wikipedia.org/wiki/Convergent_validity many tests all agree more or less and "divergent validity" they do not correlate with things that they should not
en.wikipedia.org/wiki/Nomological_network several constructs and their relationships to each other such as ageing causes memory loss