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.
As of July 23, the World Health Organization had confirmed more than 800 Ebola cases in the region, but suspects there have been many unreported infections and there may be more like 1,200 cases. Sierra Leone has been hardest hit with approximately 525 cases. How many people have died? The World Health Organization says as of July 23, there have been 456 confirmed Ebola deaths, and another 216 suspected deaths, bringing the number possibly to more than 670. The country of Guinea has the most suspected deaths. The epidemic has been in that country longer.