epe: Equipercentile equating function of row score. This function...

In takuizum/irtfun2: Some useful functions for IRT

Description

Equipercentile equating function of row score. This function generates the Form Y equipercentle equivalent of score x on FormX, eY(x).

Usage

epe(x, y, type = "both")

Arguments

x	integer vector. test score of Form X
y	integer vector. test score of Form Y
type	character. if "U", result percentile is calculated by the smmallest integer score with a cum_percent that is greater then p, "L", the largest score that is less than p or "both" output both of them.

Author(s)

Takumi Shibuya.

Examples

set.seed(0204)
X <- round(rnorm(1000) * 10 + 50)
Y <- round(rnorm(900) * 9 + 40)
res <- epe(x = X, y = Y)

set.seed(0507)
X <- round(rnorm(1000) * 10 + 40)
X[X < 0] <- 0
Y <- round(rnorm(900) * 10 + 40)
res2 <- epe(x = X, y = Y)

takuizum/irtfun2 documentation built on May 10, 2020, 8:30 a.m.