Günhan Caglayan, John Olive, Eighth grade students' representations of linear equations based on a cups and tiles model, Educational Studies in Mathematics, Vol. 74, No. 2 (June 2010), pp. 143-162 ...

We consider the M-estimation of regression parameters in the linear model by minimizing the sum of convex functions of residuals. In earlier papers (see for instance Bai, Rao and Wu (1992) and Yohai ...