POL222H1 Lecture Notes - Lecture 8: Instrumental Variable
22 Nov 2018
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We want to fix the value of z -- control for z -- to identify the true relationship between. Alternative method to control for confounding variables when x is a dichotomous variable (x=1 or x=0) We say an observation is in a treatment group if x=1 or a control group if x=0. For each observation in the treatment group, we match an observation in the control group which shares the same or similar value of z. Compare the average value of y between the treatment group and the matched control groups. How y would vary on average as x changes holding z constant. Each of the 40 candidates who appeared on the colbert report (x=1) with. Candidates who did not appear (x=0) but share similar values in important characteristics. 50 donations in past 30 days (33. 3k) 53 donations in past 30 days (32. 7k)
