16) the use of a control group in experimentation
a. provides for the manipulation of the independent variable
b. serves as a comparison to assess the manipulation
c. minimizes the cost of experimentation
d. allows for discovery of the average effect of the independent variable in different situations

the first two-party system consisted of the federalist party, who supported the ratification of the constitution, and the democratic-republican party or the anti-administration party (anti-federalists), who opposed the powerful central government, among others, that the constitution established when it took effect in

nigger, that word was originated for white folks   to keep black people under

and when black people use it, they know that's just how they greet each other

and when white folks use it, they know there's a double meaning under