How Many Degrees of Freedom Do We Have in Significance

question 54

Multiple Choice

How many degrees of freedom do we have in significance testing of r?

• A)N  2,where N equals the total number of Xs plus the total number of Ys
• B)N  2,where N equals the total number of pairs of scores
• C)N  1,where N equals the total number of pairs of scores
• D)N  1,where N equals the total number of Xs plus the total number of Ys

Calculate and interpret test statistics and p-values.

Construct and interpret confidence intervals for population means.

Understand the assumptions underlying statistical tests and confidence intervals.

Apply hypothesis testing to compare means from two populations.

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Definitions:

Ku Klux Klan

A white supremacist group that emerged in the post-Civil War United States, advocating for white dominance and known for violent racist acts.

Southern Homestead Act

A United States federal law enacted in 1866 to provide land to freed African American slaves and loyal white Southerners.

Freed Families

Families that were emancipated from slavery, focusing on their journey, challenges, and contributions post-emancipation.

Sharecropping

An agricultural system prevalent in the southern United States after the Civil War, where farmers worked land owned by someone else in return for a share of the crops produced.