getCronbach: Cronbach's alpha
In COINr: Composite Indicator Construction and Analysis

Description Usage Arguments Details Value Examples

Calculates Cronbach's alpha, a measure of statistical reliability. Cronbach's alpha is a simple measure of "consistency" of a data set, where a high value implies higher reliability/consistency.

getCronbach(
  COIN,
  dset = "Raw",
  icodes = NULL,
  aglev = NULL,
  use = "pairwise.complete.obs"
)

`COIN`	A COIN or a data frame containing only numerical columns of data.
`dset`	The data set to check the consistency of.
`icodes`	Indicator codes if a subset of `dset` is requested
`aglev`	The aggregation level to take `icodes` from (see `getIn()` for details)
`use`	Argument to pass to stats::cor to calculate the covariance matrix. Default `"pairwise.complete.obs"`.

This function simply returns Cronbach's alpha. If you want a lot more details on reliability, the 'psych' package has a much more detailed analysis.

Cronbach alpha as a numerical value.

# build ASEM COIN
ASEM <- assemble(IndData = ASEMIndData, IndMeta = ASEMIndMeta, AggMeta = ASEMAggMeta)
# get Cronbach of indicators in Physical pillar
getCronbach(ASEM, dset = "Raw", icodes = "Physical", aglev = 1)