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Membership Webinars

Member Training: The Link Between ANOVA and Regression

by TAF Support  Leave a Comment

Stage 2If you’ve used much analysis of variance (ANOVA), you’ve probably heard that ANOVA is a special case of linear regression. Unless you’ve seen why, though, that may not make a lot of sense. After all, ANOVA compares means between categories, while regression predicts outcomes with numeric variables.ANOVA chart [Read more…] about Member Training: The Link Between ANOVA and Regression

Tagged With: ANOVA, linear model, linear regression

Related Posts

  • Member Training: Centering
  • Member Training: Using Excel to Graph Predicted Values from Regression Models
  • Member Training: Hierarchical Regressions
  • Member Training: Statistical Contrasts

Member Training: Multinomial Logistic Regression

by TAF Support  Leave a Comment

Multinomial logistic regression is an important type of categorical data analysis. Specifically, it’s used when your response variable is nominal: more than two categories and not ordered.
[Read more…] about Member Training: Multinomial Logistic Regression

Tagged With: categorical variable, logistic regression, Multinomial Logistic Regression

Related Posts

  • Member Training: Using Excel to Graph Predicted Values from Regression Models
  • Member Training: Hierarchical Regressions
  • Member Training: Goodness of Fit Statistics
  • Member Training: Explaining Logistic Regression Results to Non-Researchers

Member Training: Centering

by TAF Support  Leave a Comment

Stage 2Centering variables is common practice in some areas, and rarely seen in others. That being the case, it isn’t always clear what are the reasons for centering variables. CenteringIs it only a matter of preference, or does centering variables help with analysis and interpretation? [Read more…] about Member Training: Centering

Tagged With: ANOVA, centering, linear regression

Related Posts

  • Member Training: The Link Between ANOVA and Regression
  • Member Training: Using Excel to Graph Predicted Values from Regression Models
  • Member Training: Hierarchical Regressions
  • Member Training: Statistical Contrasts

Member Training: Translating Between Multilevel and Mixed Models

by TAF Support  1 Comment

Multilevel and Mixed models are essentially the same analysis. But they use different vocabulary, different notation, and approach the analysis considerations in different ways.
[Read more…] about Member Training: Translating Between Multilevel and Mixed Models

Tagged With: mixed models, multilevel models

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  • Member Training: Matrix Algebra for Data Analysts: A Primer
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Member Training: Introduction to Stata Software Tutorial

by TAF Support 

In this 8-part tutorial, you will learn how to get started using Stata for data preparation, analysis, and graphing. This tutorial will give you the skills to start using Stata on your own. You will need a license to Stata and to have it installed before you begin.

[Read more…] about Member Training: Introduction to Stata Software Tutorial

Tagged With: Stata, Stata output, Statistical Software

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  • Statistical Software Access From Home

Member Training: Analyzing Likert Scale Data

by TAF Support  1 Comment

Is it really ok to treat Likert items as continuous? And can you just decide to combine Likert items to make a scale? Likert-type data is extremely common—and so are questions like these about how to analyze it appropriately. [Read more…] about Member Training: Analyzing Likert Scale Data

Tagged With: Correlation, data transformations, Kendall's tau-b, kruskal-wallis, Likert Scale, mann-whitney u test, Ordinal Logistic Regression, predictive models, Somer's D, Spearman correlation

Related Posts

  • When Linear Models Don’t Fit Your Data, Now What?
  • The Difference Between Association and Correlation
  • Member Training: Non-Parametric Analyses
  • Member Training: Types of Regression Models and When to Use Them

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