Tucker_equating: A function to do the Tucker linear equating.

In wzhranran/ACReporting: Scoring tests, reporting item quality and doing equating

Description

It produces ItemStats file (for both old test and new test) and equating table. Plots of liking item score and total score distribution are also developed.

Usage

Tucker_equating(MainPath, XPath, YPath, XName, YName, n_demoX = 6,
  n_demoY = 6, DNS_X_r = NULL, DNS_X_l = NULL, DNS_Y_r = NULL,
  DNS_Y_l = NULL, keychange_X_r = NULL, keychange_X_l = NULL,
  keychange_Y_r = NULL, keychange_Y_l = NULL, equate_coef_l = list(c_2015
  = c(-2.282018, 1.052596), c_2014 = c(-1.848358, 1.014028), c_2013 =
  c(2.308507, 0.9523797), c_2012 = c(3.089623, 0.9053153)),
  equate_coef_r = list(c_2015 = c(-2.978765, 1.013981), c_2014 = c(5.188769,
  0.8741792), c_2013 = c(1.171173, 0.9723494), c_2012 = c(-3.480369, 1.05726)))

Arguments

MainPath	The folder where the response files are stored in
XName	Name of the X test (without "_Listening" or "_Reading")
n_demoX	Number of demographic variables in X. Default value is 6.
n_demoY	Number of demographic variables in Y.
DNS_X_r	Vector of not score items in X reading test. Default is NULL.
DNS_X_l	Vector of not score items in X listening test.
DNS_Y_r	Vector of not score items in Y reading test.
DNS_Y_l	Vector of not score items in Y listening test.
keychange_X_r	List of key change for X reading test. Default is NULL. The first element is the item index, the rest are the keys.
keychange_X_l	List of key change for X listening test.
keychange_Y_r	List of key change for Y reading test.
keychange_Y_l	List of key change for Y listening test.
equate_coef_l	List of Tucker linear equating coefficience for Listening. First element is intercept, second is slope. e.g. c_2015 equates 2016 test score to 2015. When using this function, just fill in proper equating coefficience.
equate_coef_r	List of Tucker linear equating coefficience for Reading.
Xpath	Path of the old response file is stored in
Ypath	Path of the new response file is stored in
XName	Name of the Y test

Value

Stats for both forms of test and the equating table.

Examples

Tucker_equating(MainPath, XPath, YPath, XName, YName, n_demoX=6, n_demoY=6,
 DNS_X_r=NULL, DNS_X_l=c(1,5), DNS_Y_r=NULL, DNS_Y_l=NULL,
 keychange_X_r=list(c(2,1,4),c(13, 2)), keychange_X_l=NULL, keychange_Y_r=NULL, kechange_Y_l=NULL,
 equate_coef_l=list(c_2015=c(-2.282018,1.052596),
                c_2014=c(-1.848358,1.014028),
                c_2013=c(2.308507,0.9523797),
                c_2012=c(3.089623,0.9053153)),
 equate_coef_r=list(c_2015=c(-2.978765,1.013981),
                c_2014=c(5.188769,0.8741792),
                c_2013=c(1.171173,0.9723494),
                c_2012=c(-3.480369,1.05726)))

wzhranran/ACReporting documentation built on May 14, 2019, 8:37 a.m.