## The Annals of Statistics

### On the Inadmissibility of Step-Down Procedures for the Hotelling $T^2$ Problem

#### Abstract

Step-down testing procedures for the Hotelling $T^2$ problem are considered. It is shown that the classical step-down procedure proposed by S. N. Roy, R. E. Bargmann and J. Roy is inadmissible among invariant procedures (for a suitable invariance group) in many situations, including all those for which more than two steps are contemplated. It is also noted that in most cases, the power of the step-down procedure decreases in at least one of the noncentrality parameters over part of the parameter space. Finally, several alternative admissible step-down procedures are proposed.

#### Article information

Source
Ann. Statist., Volume 18, Number 1 (1990), 172-190.

Dates
First available in Project Euclid: 12 April 2007

https://projecteuclid.org/euclid.aos/1176347497

Digital Object Identifier
doi:10.1214/aos/1176347497

Mathematical Reviews number (MathSciNet)
MR1041390

Zentralblatt MATH identifier
0712.62052

JSTOR
Marden, John I.; Perlman, Michael D. On the Inadmissibility of Step-Down Procedures for the Hotelling $T^2$ Problem. Ann. Statist. 18 (1990), no. 1, 172--190. doi:10.1214/aos/1176347497. https://projecteuclid.org/euclid.aos/1176347497