Aproksymacja wartości krytycznych testu Manna-Whitneya dla małych prób

• Authors: Guraj-Kaczmarek, Kazimiera , Tomaszewicz, Andrzej S

Title variants

PL

Approximation of Critical Values of Mann-Whitney Test for Small Samples

Abstracts

EN

The article deals with important, from the point of view of application, Mann-Whitney test used for comparing distribution of two populations. After a short review of the known from literature basic properties of the test’s statistic, a definition of randomized test and interpolated quantiles is given. Then a simple and at the same time quite exact (for a sample of the size 5 ≤ n ≤ 50) approximation of these quant i les is presented, due to which the using of tables becomes needless. Moreover, it has been proved that the recommended in many works approximation by means of normal distribution leads to large errors in the sample size.

• Publisher: Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
• Journal: Acta Universitatis Lodziensis. Folia Oeconomica
• Year: 1992
• Volume: 117

Dates

published

1992

Contributors

author

Guraj-Kaczmarek, Kazimiera

author

Tomaszewicz, Andrzej S

other

Instytut Ekonometrii i Statystyki, Uniwersytet Łódzki

Identifiers

URI

http://hdl.handle.net/11089/6198