A Multiple-Testing Approach to the Multivariate - download pdf or read online

By Tejas Desai

ISBN-10: 1461464420

ISBN-13: 9781461464426

ISBN-10: 1461464439

ISBN-13: 9781461464433

​​ ​ In statistics, the Behrens–Fisher challenge is the matter of period estimation and speculation checking out in regards to the distinction among the technique of in most cases dispensed populations whilst the variances of the 2 populations should not assumed to be equivalent, in keeping with self sustaining samples. In his 1935 paper, Fisher defined an method of the Behrens-Fisher challenge. seeing that high-speed pcs weren't on hand in Fisher’s time, this strategy was once no longer implementable and used to be quickly forgotten. thankfully, now that high-speed desktops can be found, this technique can simply be carried out utilizing only a machine or a computer computing device. moreover, Fisher’s process used to be proposed for univariate samples. yet this procedure can be generalized to the multivariate case. during this monograph, we current the answer to the afore-mentioned multivariate generalization of the Behrens-Fisher challenge. we commence out through proposing a try out of multivariate normality, continue to test(s) of equality of covariance matrices, and finish with our approach to the multivariate Behrens-Fisher challenge. All tools proposed during this monograph may be comprise either the randomly-incomplete-data case in addition to the complete-data case. furthermore, all tools thought of during this monograph can be verified utilizing either simulations and examples. ​

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Extra resources for A Multiple-Testing Approach to the Multivariate Behrens-Fisher Problem: with Simulations and Examples in SAS®

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We call this Alternative 1. 8 below: Another alternative we can consider is the one where the three covariance matrices are the same as above, but the mean vectors are f1 0 0 0 0g; f0 1 0 0 0g, and f0 0 1 0 0g, respectively. We call this Alternative 2. 9 demonstrate that while methods B and C, particularly method B, are not uniformly better than method A in terms of power, method B can be a strong contender to method A when it comes to performing heteroscedastic MANOVA. 2 The Randomly-Incomplete-Data Case To investigate Type I errors in the randomly-incomplete-data case, we generate observations from the same three null distributions as considered in Sect.

Therefore the method of Sect. 1 applies here. The three sample mean vectors are f2:066 0:480 0:082 0:360g, f2:167 0:596 0:124 0:418g, and f2:273 0:521 0:125 0:383g. Using the methodology of Sect. 1, methods A, B, and C all reject the null hypothesis of equality of the mean vectors at the 1 % significance level. : Ein betrag zur fehlenberechnung bei wenigen beobachtungen. Landw. Jb. : Controlling the false discovery rate: a new and powerful approach to multiple testing. J. R. Stat. Soc. Ser. B. : A general distribution theory for a class of likelihood criteria.

Following a surgical procedure, when anesthesia wears off, the temperature of a patient may dip. To maintain the body temperature at an acceptable level, a company manufactured specialized heating blankets. Four types of blankets were tried on surgical patients. One of the four blankets was a standard one which was already in use in various hospitals. The company’s interest was to compare the recovery times of patients using the four different blankets. The data are as follows: data blanketI i nput blanket mi nutes @@I cardsI 1 15 1 13 1 12 1 16 1 16 1 17 1 13 1 13 1 16 1 17 1 17 1 19 1 17 1 15 1 13 1 12 1 16 1 10 1 17 1 12 2 13 2 16 2 9 353839 4 14 4 16 4 16 4 12 4 7 4 12 4 13 4 13 4 9 4 16 4 13 4 18 4 13 4 12 4 13 I runI The analysis of the above data returns the values r1 D 1; r2 D 0, and r3 D 1.

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A Multiple-Testing Approach to the Multivariate Behrens-Fisher Problem: with Simulations and Examples in SAS® by Tejas Desai

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