The Herfindahl-Hirschman Index

question 104

Multiple Choice

The Herfindahl-Hirschman index

• A)is no longer applicable to the American economy.
• B)measures the degree of concentration within an industry.
• C)seldom goes above 100.
• D)falls as the degree of concentration rises.

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Definitions:

Quasi-experimental Designs

Research designs that attempt to establish a cause-and-effect relationship but lack random assignment to groups.

Random Assignment

Random assignment is a method used in experiments to assign participants or subjects to different groups in a way that is completely by chance, ensuring the groups are statistically similar in all respects at the start of the experiment.

Quasi-experimental Design

An empirical study used to estimate the causal impact of an intervention on target population without random assignment. It is a rephrased definition highlighting its purpose for estimating causal relations.

True Experiments

Experimental designs in which the researcher manipulates the independent variable to observe its effect on a dependent variable, with random assignment to control and experimental groups.