Assignment 3

# Assignment 3 - ECO 544 Assignment 3 1. Column 5 and column...

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ECO 544 Assignment 3 1. Column 5 and column 6 indicate the regression results including explanatory variables. In column 5 the coefficient of Spending per enrolled student is 0.072, which means that if spending per pupil increases by 1 unit (\$1,000), NAEP average score increases by 7.2% of a standard deviation, and this estimate is statistically significant at the 95% level. In column 6 the coefficient of Pupil-teacher ratio is -0.03 and statistically significant. This means that if pupil-teacher ratio increases by 1, NAEP average score decrease by 3% of a standard deviation. 2. (1) Hawthorne effects mean that the “treatment” group works in some way to prove the treatment effective: students in small classes responded to the fact that they were part of an experiment, rather than a true causal effect of small classes themselves. And it is John Henry effects that the “control” group works extra hard to overcome the deficit of being assigned to a small class: the effect sizes might actually be larger than measured by the STAR experiment because students in regular classes
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## This note was uploaded on 02/24/2012 for the course ECON 544 taught by Professor Li during the Fall '10 term at SUNY Buffalo.

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