Question: Refertothementalimpairmentexamplein Sections 6.4.2 and 6.6.2. (a) Theexamplein Section 6.6.2 used highlydispersepriors.Letscompareresultstoin- formativepriorsbasedonsubjectivebeliefsthat 1 and 2 are notvarylarge.With the MCMCregress function in R, wecanspecifydifferentpriorvariancesfortheseeffects than fortheinterceptparameterbyspecifyingacovariancematrixoftheparameters.
Refertothementalimpairmentexamplein Sections 6.4.2 and 6.6.2.
(a) Theexamplein Section 6.6.2 used highlydispersepriors.Let’scompareresultstoin-
formativepriorsbasedonsubjectivebeliefsthat β1 and β2 are notvarylarge.With the MCMCregress function in R, wecanspecifydifferentpriorvariancesfortheseeffects than fortheinterceptparameterbyspecifyingacovariancematrixoftheparameters.
Forinstance,totakepriorstandarddeviation τ =
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