Resources

Objective. —To describe the pattern over time in the level of statistical power and the reporting of sample size calculations in published randomized controlled trials (RCTs) with negative results. Design. —Our study was a descriptive survey. Power …

Justification, in the vernacular language of philosophy of science, refers to the evaluation, defense, and confirmation of claims of truth. In this article, we examine some aspects of the rhetoric of justification, which in part draws on statistical …

Statistical analysis is error prone. A best practice for researchers using statistics would therefore be to share data among co-authors, allowing double-checking of executed tasks just as co-pilots do in aviation. To document the extent to which this …

A video about Statistical Rethinking: A Bayesian Course with R

In light of recent concerns about reproducibility and replicability, the ASA issued a Statement on Statistical Significance and p-values aimed at those who are not primarily statisticians. While the ASA Statement notes that statistical significance …

MOST THEORIES IN THE AREAS OF PERSONALITY, CLINICAL, AND SOCIAL PSYCHOLOGY PREDICT ONLY THE DIRECTION OF A CORRELATION, GROUP DIFFERENCE, OR TREATMENT EFFECT. SINCE THE NULL HYPOTHESIS IS NEVER STRICTLY TRUE, SUCH PREDICTIONS HAVE ABOUT A 50-50 …

Data analysis methods in psychology still emphasize statistical significance testing, despite numerous articles demonstrating its severe deficiencies. It is now possible to use meta-analysis to show that reliance on significance testing retards the …

Misinterpretation and abuse of statistical tests, confidence intervals, and statistical power have been decried for decades, yet remain rampant. A key problem is that there are no interpretations of these concepts that are at once simple, intuitive, …

The goal of this repository is to index and host short videos that can be used to supplement the teaching of introductory statistics concepts. The purpose of these videos is to show students examples of statistical concepts being used in real …

About Stats of DOOM Support Statistics of DOOM! This page and the YouTube channel to help people learn statistics by including step-by-step instructions for SPSS, R, Excel, and other programs. Demonstrations are provided including power, data …