Splithalf: Robust Estimates of Split Half Reliability
S. Parsons
TLDR
The splithalf package implements a permutation approach that takes a large number of random (without replacement) split halves of the data and generates a distribution of reliability estimates from which the package can extract and plot summary statistics.
摘要
The methods in splithalf are built around split half reliability estimation. To increase the robustness of these estimates, the package implements a permutation approach that takes a large number of random (without replacement) split halves of the data. For each permutation the correlation between halves is calculated, with the Spearman-Brown correction applied (Spearman, 1904). This process generates a distribution of reliability estimates from which we can extract and plot summary statistics (e.g. average and 95% HDI).