Which of the following is NOT a source of non-comparability between comparison groups?

A. testing
B. instrumentation
C. nonprobability sampling
D. history

C. nonprobability sampling

Political Science

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A case study is

A) An example of a highly constrained method. B) Naturalistic, but more constrained than simple naturalistic observation. C) Basic research. D) Carried out in natural environments using high technology equipment.

Political Science

An economic theory holding that the supply of money is the key to a nation's economic health and that too much cash and credit in circulation produces inflation is called __________

a. fiscalism b. Keynesian c. monetarism d. Reaganomics

Political Science