Question:

The file is the data from a study in which researchers measured the mechanical aptitude of professors from three different departments: Mechanical Engineering, Psychology, and Philosophy. The researchers wondered if academic discipline (Psychology, Philosophy, or Mechanical Engineering) was a significant predictor of how well an individual would be able to adjust a carburetor if they partialled out the effects of mechanical aptitude.

Analyze the resulting data using an analysis of covariance (ANCOVA). Please be sure to test and report all assumptions as well as all analyses relevant to determining the effect of academic discipline on ability to adjust a carburetor