Correlation matrix of Rasch residuals

Mandatory option to set relative cutoff-value over the average of all item residual correlations. It is strongly recommended to use the function RIgetResidCor() to retrieve an appropriate cutoff value for your data.

Usage

RIresidcorr(data, cutoff, output = "table", ...)

Arguments

data

Dataframe with item data only

cutoff

Relative value above the average of all item residual correlations

output

Default HTML table, optional "quarto" or "dataframe"

...

Options sent to kbl_rise()

Details

Christensen et al. (2017, p.181) write: "under the null hypothesis, the average correlation of residuals is negative"