Ken Brewer and the coefficient of heteroscedasticity as used in sample survey inference

Here we will review some of the historical development of the use of the coefficient of heteroscedasticity for modeling survey data,particularly establishment survey data,and for inference at aggregate levels. some of the work by kenneth r. w. brewer helped develop this concept. dr. brewer has worked to combine design-based and model-based inference. here,however,we will concentrate on regression modeling,and particularly on some of his earlier work. © 2011 pakistan journal of statistics.