This paper explores an algebraic relationship between two types of coefficients for a regression with several predictors and an additive binary group variable. In a general regression, the regression coefficients are allowed to be group-specific, the restricted regression imposes constant...

When a sample combines data from two or more groups, multivariate regression yields a matrix-weighted average of the group-specific coefficient vectors. However, it is possible that the weighted average of a specific coefficient falls outside the range of the group-specific coefficients, and it...

This paper explores an algebraic relationship between two types of coefficients for a regression with several predictors and a group structure. In a general regression, the regression coefficients are allowed to be group-specific, the restricted regression imposes constant coefficients. The key...

The paper provides an analysis of the recent immigration history of New Zealand and Australia. It starts with a description of the quantitative dimension of immigration: how many immigrants entered the two countries, and what was the contribution of external migration to population growth. Next,...

A history of the New Zealand immigration experience and policy is reviewed in this paper. Data from the 1981 and 1996 New Zealand Censuses are used to illustrate changes in the characteristics of immigrants, as well as labor outcomes. The decline in the income of recent immigrants over the...