Endogeneity bias 

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do school inspections improve primary school performance pdf
... can be confident that these estimates of the effect of school inspections are free from endogeneity bias. due to the limited number of inspections at randomly selected schools, these estimates are not ... schools for reasons a researcher can not observe. this non-random selection can produce an endogeneity bias in the estimates of the impact of school inspections. as a result, an estimated effect ...
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does education reduce probability being overweight pdf
... -twin models is endogeneity bias. although identical twins share the same genes and the same social environment they are not exactly identical. bound and solon (1999) show that the bias in the within ... this section we exploit the longitudinal character of our data for reducing the potential endogeneity bias. if the bias by unobserved factors is constant over time we may eliminate it by including a ...
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