A researcher examines the factors that influence student performance. She gathers data on 224 school districts in Massachusetts. The response variable is the students’ mean score on a standardized test (Score). She uses four explanatory variables in her analysis: the student-to-teacher ratio (STR), the average teacher’s salary (TSAL), the median household income (INC), and the percentage of single family households (SGL). A portion of the data is shown in the accompanying table; the entire data set, labeled MCAS, can be found on the text website.,a. Estimate: Score = ?0 + ?1STR + ?2TSAL + ?3INC + ?4SGL + and show the regression results in a well-formatted table.,b. Evaluate the potential problems of multicollinearity and changing variability in this regressionmodel.
We are a professional writing service that provides original papers. Our products include academic papers of varying complexity and other personalized services, along with research materials for assistance purposes only. All the materials from our website should be used with proper references.