R2MLwiN (version 0.8-1)

alevchem: Chemistry A-level results from one exam board

Description

Chemistry A-level results from one exam board; subset from Yang & Woodhouse, 2001. See also Rasbash et al. (2012) and Browne (2012).

source

Browne, W. J. (2012) MCMC Estimation in MLwiN Version 2.26. University of Bristol: Centre for Multilevel Modelling. Rasbash, J., Charlton, C., Browne, W.J., Healy, M. and Cameron, B. (2009) MLwiN Version 2.1. Centre for Multilevel Modelling, University of Bristol. Rasbash, J., Steele, F., Browne, W.J. and Goldstein, H. (2012) A User's Guide to MLwiN Version 2.26. Centre for Multilevel Modelling, University of Bristol. Yang, M., Woodhouse, G. (2001) Progress from GCSE to A and AS level: institutional and gender differences, and trends over time. British Educational Research Journal 27: 245-267.

Details

The alevchem dataset is one of the sample datasets provided with the multilevel-modelling software package MLwiN (Rasbash et al., 2009).

Examples

data(alevchem, package = "R2MLwiN")

alevchem$gcseav <- double2singlePrecision(alevchem$gcse_tot/alevchem$gcse_no - 6)

# Note: Establishment codes on their own do not uniquely identify schools.
# Schools are instead uniquely identified by LEA code, establishment ID
# combination. Thus, here we generated a unique school ID.

alevchem$school <- as.numeric(factor(paste0(alevchem$lea, alevchem$estab)))

(mymodel <- runMLwiN(logit(a_point, cons, 6) ~ 1 + gcseav[1:5] + I(gcseav^2)[1:5] +
  gender[1:5] + (1[1:5] + gcseav[1:5] | school), 
  D = "Ordered Multinomial", estoptions = list(EstM = 1), data = alevchem))