Glaeser, Edward LudwigKatz, Lawrence F.Barrios, Thomas2014-06-062014-06-062014Barrios, Thomas. 2014. Essays in Applied Econometrics and Education. Doctoral dissertation, Harvard University.http://dissertations.umi.com/gsas.harvard:11558http://nrs.harvard.edu/urn-3:HUL.InstRepos:12274546This dissertation consists of three essays. First, we explore the implications of correlations that do not vanishing for units in different clusters for the actual and estimated precision of least squares estimators.en-USEconomicsThesis or Dissertation2014-12-04