A nonexperimental study designed to measure the degree of relationship (if any) between two or more events or variables is called a

Achange in any of the following factors will cause investment spending and aggregate demand to change excepta. the interest rate effect b. expected business conditionsc. real interest rate d. expected future returns created by new technology e. expected business taxes

B. speculate about one positive way and one negative way that this boundary has affected the geographical units it separates over time.

General ways to reduce the risk of some action include