rmsd: Calculate RMSD

In cddesja/hemp: Handbook of Educational Measurement and Psychometrics Using R Companion Package

Description

Calculates the root mean squared deviation.

Usage

rmsd(theta1, theta2)

Arguments

theta1	Vector containing the estimated latent traits from the first estimation method.
theta2	Vector containing the estimated latent traits from the second estimation method.

Examples

data(SAPA)
twopl_mod <- "F = 1 - 16"
twopl_fit <- mirt(data = SAPA, model = twopl_mod,
                  itemtype = "2PL", SE = TRUE)
latent_mle <- fscores(twopl_fit, method = 'ML', full.scores = TRUE, full.scores.SE = TRUE)
latent_map <- fscores(twopl_fit, method = 'MAP', full.scores = TRUE, full.scores.SE = TRUE)
rmsd(latent_mle, latent_map)

cddesja/hemp documentation built on April 7, 2021, 9:24 p.m.