The goal is threefold. First, I want to be able to hold the students accountable for the work they’re doing in class. Although the TAs and and float throughout the class as they’re working on an assignment, our eyes can’t be everywhere at once. Second, I hope by getting students involved in a discussion, the level of interest in the material will climb. My sense is that if they’ve invested in the work and have made an interesting discovery, sharing that discovery with the class will excite, motivate, and reinforce the work they’re doing. Finally, I want the discussion to turn toward issues that are central to the class. Wrestling with those problems in an assignment and sharing that with others will help provide concrete examples of how these problems come up when doing real data analysis.
In each assignment there are certain skills and concepts they have to master in order to complete in the assignment. In one sense there’s simply a test of their ability to execute code in a statistical package. In another sense, to complete the assignment satisfactorily, the student must understand the concept that is underlying the exercise, whether it is data description, regression analysis, regression diagnostics, or logistic regression.
The evidence that I’ve succeeded in sparking a discussion will be whether students become engaged in the process, actively participate and argue with one another. The other marker will
be that the deeper issues involved in the exercise will come front and center.