What is the best definition of "income tax”? a) a tax on the purchase price of goods b) a tax on the value of property c) a tax on money earned d) a tax set aside each month for health care c) a tax on money earned

In which research method does a researcher change the value of one variable to determine how the change affects another variable? a. experiment b. observational research c. survey d. case study

When and why were fingerprints first used in the united states

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.