In a hierarchical multiple regression analysis

a. the researcher determines the order in which variables enter the analysis
b. predictor variables that account for more variance in the outcome variable enter the regression equation first
c. variables are entered into the regression equation in sets
d. only variables that increase R2 enter the regression equation
e. only predictor variables that predict unique variance in the outcome variable enter the equation

A

Political Science

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In less developed countries, modern farm methods such as damming waterways to provide irrigation __________

a. improve the health of all in the area by allowing more grains to be grown b. create wealth that improves the community's living conditions c. often create environmental change that leads to disease d. improve health by supplying clean water

Political Science

Although historians have studied cities for centuries, in which of the academic disciplines listed below were cities first studied systematically?

a. economics b. political economy c. sociology d. political science

Political Science