What made the Marshall plan necessary to U. S leaders?

For each of the following examples of data, determine which scale of measurement is used. a) the number of miles joggers run per week. b) the starting salaries of graduates of mba programs c) the months in which a firm's employees choose to take their vacations. d) the final letter grades received by students in a math course.

What percentage of roads in germany have no speed limit?

According to this chart, which country is likely to have the most economic freedom with regards to entrepreneurship?