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Proof for two-sample Hotelling $T^2$ statistic?

I've been reading "A primer of multivariate statistics" by Richard J. Harris, page 546, which shows how to derive the Hotelling $T^2$ statistic, after seeing this related but different question (I ...
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Theoretical question about Hotelling and LDA

I have been studying Hotelling $T^2$ stat as the univariate t test on a linear combination on the original multiple variables. The procedure follows like this: Reduce dimensionality by creating a ...
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Test of differences (e.g. Hotelling's T) for aggregated data

I have 14 regression predictors and want to test statistically whether they differ from each other in their explained variance of the dependent variable. I decompose explained variance using the R ...
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Correlation and Hotelling test

To find a Hotelling $T^2$ score it is necessary to calculate the covariance matrix and then invert it. Now, when the test is a two-sample $T^2$ test, the covariance matrix is a pooled matrix. When ...
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How do I find the coefficients of a two-sample T2 Hotelling Test?

Hi I am trying to figure out how to obtain the coefficients for the linear combination of variables determined by a Hotelling $T^2$ test. I know that for the one sample case it is $a = S^{-1} \Delta ...
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148 views

Hotelling T^2 test derivation question

I am reading about the Hotelling $T^2$ test (A primer of multivariate statistic s by Richard J. Harris). It says here that the test can be seen as creating a linear combination of your variables and ...
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Hotelling for testing proportions

I have two groups with N individuals each. For each individual, three parameters are measured, which always add up to 100%. I want to test whether the groups are different. Would Hotelling's ...
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204 views

Is there a generalization of Pillai trace and the Hotelling-Lawley trace?

In the setting of multivariate multiple regression (vector regressor and regressand), the four major tests for the general hypothesis (Wilk's Lambda, Pillai-Bartlett, Hotelling-Lawley, and Roy's ...
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What is the distribution of this nearly-Hotelling statistic?

Let $X$ be an $n \times l$ matrix, and $F$ an $n \times p$ matrix, with the rows of $X$ and $F$ drawn i.i.d. from multivariate Gaussians. (The independence applies to rows: the $X$ and $F$ may be ...
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272 views

Tutorial for performing Contrasts for MANOVA

Context I have a multivariate dataset with a test group and three control groups. I was thinking that the best way to determine if and how the test group differed from all of the control groups would ...
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998 views

How exactly does Wilks' Lambda distribution generalize the Hotelling distribution?

According to Wikipedia, Wilks' Lambda distribution generalizes Hotelling's distribution. I am having some problems seeing how this works. I can see how Hotelling's distribution generalizes Student's ...