I liked this article, and it nicely demonstrates the concept of âcontrolling for other variablesâ (IQ, career, income, age, etc) in order to best isolate the true relationship between just the 2 variables in question.t also should be noted that controling for other variables does only make sense when the explanatory variables are moderately correlated (collinearity). In the aforementioned example, the Product-Moment correlation between exposure and covariate is 0.50, i.e. 2.
In Indonesia, at least 3,000 of the dead were in Banda Aceh, the capital of Aceh province, and officials said the death toll was likely to rise. Communication with many coastal areas was impossible, and the extent of the damage there remained uncertain.
Civilian casualties in Sri Lanka were second only to those in Indonesia (see Indonesia). Reports vary on the number of deaths since many people are still missing and the country lacks adequate communications. As of March 1, 2005, estimates state that 36,603 people perished in the months following the tsunami. Another 800,000 people living on the coasts of Sri Lanka have been directly affected.