__________ is the likelihood that the device or scale used to measure a variable actually is related to the topic or theory of interest

A researcher conducts a study comparing class grades and age in one classroom. While the majority of the class is 19-22 years old, there are three students in their 40s. In this case, the most reasonable measure of central tendency would be the

A) Mode. B) Median. C) Mean. D) Standard deviation.

The system established after World War II to manage the world economy was the __________.

A. World Trade Organization B. Bretton Woods system C. International Monetary Fund D. World Bank