In order to determine how the independent variable influences the dependent variable a political scientist must control for _____ and _____ variables.

What is a sampling frame, and give an example?

What will be an ideal response?

When compared with the rest of the world, America has a relatively low

A) number of offices up for election. B) number of candidates who seek office. C) frequency of elections. D) voter turnout in elections. E) all of the above