Suppose you want to build a model that predicts the performance of fifth graders on a timed reading comprehension exam taken by all fifth grade students in a school district at the same time. The exam consists of 20 multiple choice items based on 2 short stories and 2 newspaper articles.

List 2 dummy and 2 continuous variables that may likely help determine (explain) exam scores. Identify what type each variable is and indicate the sign on the coefficient (positive or negative) you would expect for each variable.

Type of Variable on Coefficient Variable Sign