Since the 1930s, the number and scale of interest groups at the national level has ________.

One of the various ways in which parties contribute to democratic governance is by __________.

The most prominent cartel in the international economy is the __________.

Most texans have indicated in numerous polls that they prefer __________ taxation.

Most texas cities elect their city council members using __________.

Name recognition often gives ________ a distinct advantage in texas elections.

An indicator or measure of history effect on a dependent variable during a specified time is called

Observational study is a nonexperimental research design in which the researcher simply observes differences in the dependent variable for naturally occurring treatment and control groups.

A study in which there is random assignment or “as-if ” random assignment of units to experimental and control groups is known as

Experimental design with _____ control and experimental group.

Intervention analysis is a nonexperimental time series design in which measurements of a dependent variable are taken both before and after the “introduction” of an independent variable.