• No results found

The multiple comparisons problem

Multiple comparisons: problem and solutions

Multiple comparisons: problem and solutions

... Depends on type of test, dimension and threshold Number peaks= intrinsic volume * peak density. At high threshold,[r] ...

29

A New Approach to the Problem of Multiple Comparisons in the Genetic Dissection of Complex Traits

A New Approach to the Problem of Multiple Comparisons in the Genetic Dissection of Complex Traits

... ABSTRACT Saturated genetic marker maps are being used to map individual genes affecting quantitative traits. Controlling the “experimentwise” type-I error severely lowers power to detect segregating loci. For prelimi- ...

8

CiteSeerX — Multiple Comparisons

CiteSeerX — Multiple Comparisons

... consumption problem, many would argue that it is not appropriate to compare, for example, adjusted means of Small vehicles and Large vehicles, since these two groups’ weights do not ...consideration, ...

498

CiteSeerX — On multiple comparisons

CiteSeerX — On multiple comparisons

... On Multiple Comparisons in R ∗ by Frank Bretz, Torsten Hothorn and Peter Westfall 1 Description The multiplicity problem arises when several inferences are considered simulta- neously as a ...of ...

13

Multiple Comparisons Using R

Multiple Comparisons Using R

... Many scientific experiments subject to rigorous statistical analyses involve the simultaneous evaluation of more than one question. For example, in clinical trials one may compare more than one treatment group with a ...

193

Nonparametric Predictive Inference

for Multiple Comparisons

Nonparametric Predictive Inference for Multiple Comparisons

... Chapter 8. Conclusions 140 other method, which may often not have been made under complete awareness but more for mathematical convenience. Also, it is important to be aware of the fact that problems which appear to be ...

167

The Bonferonni and Šidák Corrections for Multiple Comparisons

The Bonferonni and Šidák Corrections for Multiple Comparisons

... This is a consequence of the logic of hypothesis testing: We reject the null hypothesis if we witness a rare event. But the larger the number of tests, the easier it is to find rare events and therefore the easier it is ...

9

Comparisons of ten corrections methods for t-test in multiple comparisons  via Monte Carlo study

Comparisons of ten corrections methods for t-test in multiple comparisons via Monte Carlo study

... 2018 Multiple comparisons of treatments means are common in several fields of ...in multiple comparisons, however the p-values associated with it are inac- curate, since there is no control on ...

19

Should methods of correction for multiple comparisons be applied in pharmacovigilance?

Should methods of correction for multiple comparisons be applied in pharmacovigilance?

... KEY POINTS • Spontaneous reporting (SR) databases are useful tools to generate signals in a timely and cost-effective fashion. • In pharmacovigilance where a large number of tests are performed simultaneously and ...

7

Statistical Comparisons of Classifiers over Multiple Data Sets

Statistical Comparisons of Classifiers over Multiple Data Sets

... Unfortunately, ANOVA is based on assumptions which are most probably violated when ana- lyzing the performance of machine learning algorithms. First, ANOVA assumes that the samples are drawn from normal distributions. In ...

30

The Pickup and Multiple Delivery Problem

The Pickup and Multiple Delivery Problem

... our problem as a PMDP rather than as a PDP due to a number of additional constraints that must be satisfied to meet the requirements of the retailers Transfaction ...The problem is defined in terms of ...

189

The Strength of Statistical Evidence for Composite Hypotheses with an Application to Multiple Comparisons

The Strength of Statistical Evidence for Composite Hypotheses with an Application to Multiple Comparisons

... for multiple comparisons has its roots in Fisher’s disjunction: if the p-value is low, then either an event of low probability has occurred or the null hypothesis is false (Fisher, 1925; Johnstone, 1986; ...

39

Multiple regressions: the meaning of multiple regression and the non problem of collinearity

Multiple regressions: the meaning of multiple regression and the non problem of collinearity

... Misunderstanding 2: Collinearity leads to misleading inferences because it causes parameter estimates to change—even to change sign—when other model terms are added to, or removed from, a model This change in estimated ...

24

Multiple curve comparisons with an application to the formation of the dorsal funiculus of mutant mice

Multiple curve comparisons with an application to the formation of the dorsal funiculus of mutant mice

... curve comparisons with an application to the formation of the dorsal funiculus of mutant mice Herberich, Esther ; Hassler, Christine ; Hothorn, Torsten Abstract: Much biological experimental data are represented ...

21

Graphical comparisons of relative disease burden across multiple risk factors

Graphical comparisons of relative disease burden across multiple risk factors

... PAFs for hypertension and physical inactivity than Fig. 1 might suggest since the log-scaling has distorted the ab- solute difference in PAF. Second, the approximations de- rived are only valid for logistic disease ...

9

Composite Likelihood: Multiple Comparisons and Non-Standard Conditions in Hypothesis Testing

Composite Likelihood: Multiple Comparisons and Non-Standard Conditions in Hypothesis Testing

... the problem of multiple hypothesis testing for multidimensional clustered ...The problem of multiple comparisons is common in many ...construct multiple comparisons ...

149

CiteSeerX — Multiple Comparisons

CiteSeerX — Multiple Comparisons

... Remarkably, all elemental masses can be seen to follow the same (energy de- pendent) functional dependence between the shape parameter and the mass estimator. On the other hand this may be expected, because showers of ...

27

If not multiple comparisons, then what?

If not multiple comparisons, then what?

... Admittedly, in a study with a single treatment factor com- prising a small number of treatments (typically three or four), all pairwise comparisons may be acceptable. How- ever, note that even if there are only ...

5

Interpersonal comparisons of utility: The epistemological problem

Interpersonal comparisons of utility: The epistemological problem

... Therefore, this strategy too fails to successfully address the issue of justification. The failure of the previous arguments increases the pressure brought by the sceptical challenge. The idea is that, perhaps, the ...

176

CiteSeerX — Multiple Comparisons Among Means

CiteSeerX — Multiple Comparisons Among Means

... Stable URL: http://www.jstor.org/stable/2282330 Accessed: 06/07/2010 05:39 Your use of the JSTOR archive indicates your acceptance of JSTOR's Terms and Conditions of Use, available at ...

14

Show all 10000 documents...

Related subjects