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View article: Principles for Writing about Quantitative Research
Principles for Writing about Quantitative Research Open
Writing about statistical information is among the most difficult types of scientific communication. In this article, I illustrate a few principles for writing clearly and effectively about quantitative research, suitable for both an acade…
View article: Histograms: A Useful Data Analysis Visualization
Histograms: A Useful Data Analysis Visualization Open
Visualizing data with histograms is an excellent first step in any analysis of quantitative data, but many researchers fail to take advantage of this exploratory data analysis tool. This article gives an overview of histograms and uses exa…
View article: Percent Differences: Another Look
Percent Differences: Another Look Open
This article discusses 3 common measures of comparison (absolute difference, ratio, and percent difference [PD]), explores the advantages and disadvantages of each, introduces a less-common measure called symmetrized percent change, and ex…
View article: An Introduction to Bayesian Data Analysis for Correlations
An Introduction to Bayesian Data Analysis for Correlations Open
Bayesian approaches to data analysis can be a good alternative or supplement to traditional hypothesis testing. Unlike P values, simple Bayesian analyses can provide a direct measure of the strength of evidence both for and against a study…
View article: Randomization Test: An Alternative Analysis for the Difference of Two Means
Randomization Test: An Alternative Analysis for the Difference of Two Means Open
A randomization test is proposed for detecting spatial dependence in panel models with cross-sectional dependence induced by an unobserved common factor structure. Spatial dependence is related to the position of observations in space whil…
View article: The Box Plots Alternative for Visualizing Quantitative Data
The Box Plots Alternative for Visualizing Quantitative Data Open
Although bar charts are popular among researchers and are ubiquitous in quantitative software packages, they do not always provide the best visualization for a dataset. This column discusses a simple, alternative graphical method that is o…