What statistical support is available in the DataShop?
As of June, 2006 the statistical support directly available in the DataShop is limited to statistics on learning curves (see below). However, you can export the data to a file and use your favorite statistical software package. The DataShop integrates the Learning Factors Analysis algorithm (Koedinger, Junker 1999) so that you can view a predicted learning curve. With combinatorial search and a built-in mathematical model measuring student proficiency, knowledge component difficulty, and knowledge component learning rates, this algorithm is able to quantify the student learning process for different knowledge components and predict their performance on each use of the knowledge component. The LFA algorithm has been shown to be able to help identify hidden difficulties of knowledge components that may hinder student learning (Cen, Koedinger, and Junker 2005).
