Zobrazeno 1 - 10
of 1 418
pro vyhledávání: '"F-test of equality of variances"'
Publikováno v:
Animal Behaviour. 136:119-126
Biologists commonly compare variances among samples, to test whether underlying populations have equal spread. However, despite warnings from statisticians, incorrect testing is rife. Here we show that one of the most commonly employed of these tests
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae1e075638b6bdf4c46085a955ceb479
https://doi.org/10.1016/j.anbehav.2017.12.014
https://doi.org/10.1016/j.anbehav.2017.12.014
Autor:
Bernhard Klar, Julian Frank
Publikováno v:
Statistical Methods & Applications. 25:581-599
Statistical tests for two independent samples under the assumption of normality are applied routinely by most practitioners of statistics. Likewise, presumably each introductory course in statistics treats some statistical procedures for two independ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96e802107ca4e46b349b5b68db184abc
https://doi.org/10.1007/s10260-016-0353-z
https://doi.org/10.1007/s10260-016-0353-z
Autor:
Aldwin M. Teves
Publikováno v:
PEOPLE: International Journal of Social Sciences. 3:306-316
Prior to comparison of means, there is k-population variances need to be tested. The usual contention is that . The propose methodology utilizes the Geometric Mean among sample variances to estimate the pooled variance, that plays a vital role in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f55ebc15571a0a08f31b21413738b13d
https://doi.org/10.20319/pijss.2017.32.306316
https://doi.org/10.20319/pijss.2017.32.306316
Publikováno v:
Journal of Applied Statistics. 45:956-970
For the sign testing problem about the normal variances, we develop the heuristic testing procedure based on the concept of generalized test variable and generalized p-value. A detailed simulation study is conducted to empirically investigate the per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47cef8ea6145b42f6df51197f108bf19
https://doi.org/10.1080/02664763.2017.1325857
https://doi.org/10.1080/02664763.2017.1325857
Publikováno v:
Communications in Statistics - Simulation and Computation. 46:7423-7446
Equality of variances is one of the key assumptions of analysis of variances (ANOVA). There are several testing procedures available to validate this assumption, but it is rare to find a test procedure which controls the type I error rate while provi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2911fe151d64eec2325fa8adfe17af57
https://doi.org/10.1080/03610918.2016.1241404
https://doi.org/10.1080/03610918.2016.1241404
Autor:
Robert A. Cribbie, Constance A. Mara
Publikováno v:
The Journal of Experimental Education. 86:442-457
Researchers are often interested in establishing equivalence of population variances. Traditional difference-based procedures are appropriate to answer questions about differences in some statistic (e.g., variances, etc.). However, if a researcher is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1b0fb485c0e7f61173717e6fbb023b9
https://doi.org/10.1080/00220973.2017.1301356
https://doi.org/10.1080/00220973.2017.1301356
Publikováno v:
Journal of Multivariate Analysis. 155:200-216
In recent years, with the rapid development of data collecting technologies, high-dimensional data have become increasingly prevalent. Much work has been done for testing hypotheses on mean vectors, especially for high-dimensional two-sample problems
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81cbfcbe0220b2e7a896eaa5c1f7ee65
https://doi.org/10.1016/j.jmva.2017.01.002
https://doi.org/10.1016/j.jmva.2017.01.002
Autor:
Pavlina Rumcheva, Brett Presnell
Publikováno v:
Australian & New Zealand Journal of Statistics. 59:119-135
Summary A multi-sample test for equality of mean directions is developed for populations having Langevin-von Mises-Fisher distributions with a common unknown concentration. The proposed test statistic is a monotone transformation of the likelihood ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f7e4ae6a7bd68809b01e1caed8ddc43
https://doi.org/10.1111/anzs.12183
https://doi.org/10.1111/anzs.12183
Publikováno v:
Statistical Papers. 60:1369-1395
A test for the equality of error distributions in two nonparametric regression models is proposed. The test statistic is based on comparing the empirical characteristic functions of the residuals calculated from independent samples of the models. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a811858b1621ba12cdbb7fbc3afef90c
https://doi.org/10.1007/s00362-017-0878-8
https://doi.org/10.1007/s00362-017-0878-8
Autor:
Lei Sun, David Soave
Publikováno v:
Biometrics. 73:960-971
We generalize Levene's test for variance (scale) heterogeneity between k groups for more complex data, when there are sample correlation and group membership uncertainty. Following a two-stage regression framework, we show that least absolute deviati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe82aaa7731c97c0e0ec794d4f53d23d
https://doi.org/10.1111/biom.12651
https://doi.org/10.1111/biom.12651