What kinds of activities made up the early economies of the north american colonies?

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.

Experiment to investigate effect of medication on levels of stress in males and females. dependant variable?

According to machiavelli what will happen to a leader when things go wrong and he is in need of support