383 search results for "anova"

MANOVA Test Statistics with R

December 8, 2016
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Multiple tests of significance can be employed when performing MANOVA. The most well known and widely used MANOVA test statistics are Wilk’s , Pillai, Lawley-Hotelling, and Roy’s test. Unlike ANOVA in which only one dependent variable is examined, several tests are often utilized in MANOVA due to its multidimensional nature.... The post MANOVA Test Statistics with R appeared...

Multiple Analysis of Variance (MANOVA)

December 1, 2016
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MANOVA, or Multiple Analysis of Variance, is an extension of Analysis of Variance (ANOVA) to several dependent variables. The approach to MANOVA is similar to ANOVA in many regards and requires the same assumptions (normally distributed dependent variables with equal covariance matrices). This post will explore how MANOVA is performed... The post Multiple Analysis of Variance (MANOVA) appeared...

Repeated measures ANOVA in R Exercises

November 29, 2016
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One way, two way and n way ANOVA are used to test difference in means when we have one, two and n factor variables. A key assumption when performing these ANOVAs is that the measurements are independent. When we have repeated measures this assumption is violated, so we have to use repeated measures ANOVA. Repeated

Raccoon | Ch. 2.1 – T-test, Anova: 1-sample t-test

October 27, 2016
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Raccoon is a free web-book about Statistical Models with R. It's the collection of twenty years of notes, exercises and concepts working with statistics and R. This is the first section of the second chapter, about 1-sample t-test. The post Raccoon | Ch. 2.1 – T-test, Anova: 1-sample t-test appeared first on Quantide - R...

Two Way ANOVA in R Exercises

October 17, 2016
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One way analysis of variance helps us understand the relationship between one continuous dependent variable and one categorical independent variable. When we have one continuous dependent variable and more than one independent categorical variable we cannot use one way ANOVA. When we have two independent categorical variable we need to use two way ANOVA. When

R for Beginners: Using R Commander for Basic t Tests and One Way ANOVA

September 19, 2016
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R for Beginners:  Using R Commander for Basic t Tests and One Way ANOVA A tutorial by D. M. Wiig This post is contained in an embedded Word document.  To read it full screen click on the icon in the lower right corner of the document window. I hope that you found this tutorial informative. … Continue...

Using MANOVA to Analyse a Banking Crisis Exercises

August 24, 2016
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In this set of exercises we will practice multivariate analysis of variance – MANOVA. We shall try to find if there is a difference in the combination of export and bank reserves, depending on the status of banking sector (is there a crisis or not). The data set is fictitious and servers for education purposes

Exploring Learner Predictions with Partial Dependence and Functional ANOVA

August 10, 2016
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Learners use features to make predictions but how those features are used is often not apparent. mlr can estimate the dependence of a learned function on a subset of the feature space using generatePartialDependenceData. Partial dependence plots reduce the potentially high dimensional function estimated by the learner, and display a marginalized version of this function in a lower dimensional space....

R for Publication by Page Piccinini: Lesson 5 – Analysis of Variance (ANOVA)

June 20, 2016
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In today’s lesson we’ll take care of the baseline issue we had in the last lesson when we have a linear model with an interaction. To do that we’ll be learning about analysis of variance or ANOVA. We’ll also be going over how to make barplots with error bars, but not without hearing my reasons Lesson 5: Analysis...

A simple ANOVA

January 17, 2016
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I was browsing Davies Design and Analysis of Industrial Experiments (second edition, 1967). Published by for ICI in times when industry did that kind of thing. It is quite an applied book. On page 107 there is an example where the variance of a process is estimated.DataData is from nine batches from which three samples were selected (A, B and...