Residual and influence analysis help us study the effects of individual observations on the model and help us check model fit. A semester-long, group project forms a major component of the course work. In groups of two to four, students select a research question that can be studied using a linear model. Groups prepare a research proposal that must be approved by the instructor before data collection can begin. They write an interim report on their progress due at midterm, and a final report on their findings, due on the last day of class.
Groups give oral reports to their classmates on their proposals and on their findings.
Sometimes other faculty or outsiders with interest in particular projects attend these presentations. Techniques for oral presentation of quantitative information may be discussed in class when groups are preparing for these talks. Techniques for writing technical reports are also emphasized.