Description Usage Arguments Details Value Author(s) References See Also Examples
This function implements the mean method of test equating as described in Kolen and Brennan (2004).
1 |
sx |
A vector containing the observed scores of the sample taking test X. |
sy |
A vector containing the observed scores of the sample taking test Y. |
scale |
Either an integer or vector containing the values on the scale to be equated. |
The function implements the mean method of equating as described in Kolen and Brennan (2004). Given observed scores sx and sy, the functions calculates
phi(x;mu_x,mu_y)=x-mu_x+mu_y
where mu_x and mu_y are the score means on test X and Y, respectively.
A two column matrix with the values of phi() (second column) for each scale value x
(first column)
Jorge Gonzalez B. jgonzale@mat.puc.cl
Gonzalez, J. (2014). SNSequate: Standard and Nonstandard Statistical Models and Methods for Test Equating. Journal of Statistical Software, 59(7), 1-30.
Kolen, M., and Brennan, R. (2004). Test Equating, Scaling and Linking. New York, NY: Springer-Verlag.
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