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Data Interpretation

statistical model

7 Practical Guidelines for Accurate Statistical Model Building

Model  Building–choosing predictors–is one of those skills in statistics that is difficult to teach.   It’s hard to lay out the steps, b...

Statistical analysis

Statistical Analysis

What is statistical analysis? It might sound pretty naïve, to many, to ask this question. In his introduction to ‘Statistical Analysis Handboo...

p-value image

The “Big Five” Misinterpretations of Statistical Significance

NOTE TO READERS: The following has been excerpted from Principles and Practice of Structural Equation Modeling (Third Edition) by Rex B. Kline....

ANOVA

One-way Analysis of Variance, ANOVA

Analysis of Variance (ANOVA) is a statistical method used to test differences between two or more means. ANOVA is used to test general, omnibus, ...

Statistical hypothesis testing

Statistical hypothesis testing

The term hypothesis testing is probably not new to you. The term significance testing is sometimes used. A statistical hypothesis is an assumptio...

Multiple imputation of missing data

Imputation methods for missing data in longitudinal studies

Having complete data that one sought to record infrequently happens, especially in a study setting where repeated measures from subjects are take...

Pearson correlation

Pearson’s correlation coefficient: Use & misuse

This article was originally posted at http://influentialpoints.com/Training/. We have not made edits from the original post apart from this ane...

Statistics help

Statistics help

It is easy to load data in as spreadsheet or any statistical software with a friendly user interface. It has also become relatively easy to brows...

p-values

A p-value; what does it mean really?

On several occasions I have been approached by students and researchers to "help them get a p-value for their results". They believed that the pu...