______ are tools that help researchers measure something.

________, an underlying premise of the UN, refers to generating cooperation on major, divisive issues by starting with cooperating on less important, specialized matters

a. the UN Conference on Trade and Development b. the International Monetary Fund c. the World Intellectual Property Organization d. the International Court of Justice e. the International Labor Organization

A doctor wanted to learn about the use of preventive health care services among low-income men. She conducted a survey in the waiting room of the clinic where she worked. This type of sample is called

a. Convenience sampling b. Random sampling c. Systematic sampling d. Stratified sampling