ECON
Quiz1-v1

# Cesh08 coef std err t pt 95 conf interval cesh40

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------------------------------------------------------------------------------ cesh08 | Coef. Std. Err. t P>|t| [95% Conf. Interval] -------------+---------------------------------------------------------------- cesh40 | 1.206662 .1663617 7.25 0.000 .877965 1.535359 pctimm | .0987854 .1068405 0.92 0.357 -.1123099 .3098807 pcthisp | -.1597734 .0468211 -3.41 0.001 -.2522825 -.0672644 pctbl | -.0425834 .0440727 -0.97 0.335 -.1296622 .0444953 pctfem | 1.294524 .1898145 6.82 0.000 .9194888 1.669559 _cons | -.1843857 .0748046 -2.46 0.015 -.3321846 -.0365867 ------------------------------------------------------------------------------ This comes from a study of the persistence in regional educational differences in the U.S.   The  unit of observation is a metropolitan area -- there are 157 metropolitan areas in the sample.  The  dependent variable, "cesh08," is the share of the area's workers with a college degree in 2008.  The key independent variable of interest, "cesh40," is the share of the area's workers with a  college degree in 1940.  The controls are the share of the area's workers who are immigrant,  Hispanic, black, and female. 6. [4 points] Interpret the magnitude of the slope estimate on cesh40. 7. [4 points] Can you reject the null hypothesis that the slope on cesh40 is equal to 1 at the  5% level?  You may use 1.96 as your critical value.  Why is 1 a reasonable null  hypothesis here?  What does a coefficient of 1 represent? Page      3     of 3 **DONT FORGET BACK OF PAGE**

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8. [4 points] Calculate the mean squared error. Page      4     of 3 **DONT FORGET BACK OF PAGE**
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• Fall '09
• Econometrics, Mean squared error, Head Start, causal effect, Head Start group, **DONT FORGET

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