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In a random effects model, we assume that the unobserved effect is correlated with each explanatory variable.
Federal Government
The national government of a federation, such as the United States, which holds the authority to govern a nation as a whole, distinct from state or local governments.
Slaves
People forced into servitude, deprived of personal freedom.
Harriet Tubman
An American abolitionist and political activist who escaped slavery and subsequently made some thirteen missions to rescue approximately seventy enslaved people using the network of antislavery activists and safe houses known as the Underground Railroad.
Underground Railroad
A network of secret routes and safe houses used in the United States during the early to mid-19th century to help enslaved African Americans escape to free states and Canada.
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