A FITTED TEST FOR THE BEHRENS-FISHER PROBLEM

被引：2

作者：

LEE, AFS

FINEBERG, NS

机构：

[1] BOSTON UNIV,DEPT MATH,BOSTON,MA 02215

[2] INDIANA UNIV,SCH MED,INDIANAPOLIS,IN 46223

来源：

COMMUNICATIONS IN STATISTICS-THEORY AND METHODS | 1991年 / 20卷 / 02期

关键词：

TEST OF 2 MEANS WHEN VARIANCES UNEQUAL; SIZE; POWER;

D O I：

10.1080/03610929108830521

中图分类号：

O21 [概率论与数理统计]; C8 [统计学];

学科分类号：

020208 ; 070103 ; 0714 ;

摘要：

In 1975, Lee and Gurland proposed a solution to the Behrens-Fisher problem. It had excellent control of size and power and was relatively simple to use. However it requires extensive special tables. This article proposes a modification of this approach. It replaces the tables with easily computed functions of the sample sizes and a standard t table. Control of size and power are equivalent to that obtained by Lee and Gurland. Furthermore, the test is also compared with the Welch's approximate t test and shows better control of size, with similar power curves when sample sizes are at least four from each of the two normal populations.

引用

页码：653 / 666

页数：14

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