Angrist and Lavy (1999) data set used by Rosenbaum (2010) to demonstrate his instrumental variable sensitivity analysis.
data(angristlavy)
A data.frame
with 172 observations on the following variables).
clasz: Size of class or classes for each cohort.
avgmath: Average math test score for each class.
z: A recode of enrollment with 1 indicating a cohort with 41 or more students, i.e. two classes. This serves as the instrument which encourages smaller classes.
pair: matched pair id
Rosenbaum, Paul R. (2010). Design of Observational Studies. Springer-Verlag.