format
A multivariate time series with 89 observations on 4 variables: District, Revenue and Mem
(number of students). The object is of class "mts".source
Gastwirth, J. L. (2006). A Sixty Million Dollar Statistical
Issue Arising in the Interpretation and Calculation of a Measure of
Relative Disparity Mandated by Law: Zuni Public School District 89
v. U.S. Department of Education. (working paper, Department of Statistics,
George Washington University).