(c) When possible, the best way to establish that an observed association is the result of a cause-and-effect relation is by means of A. the correlation coefficient. B. a well designed experiment. C. the least squares regression line. D. the square of the correlation coefficient. E. None of the above.

You are looking for your first credit card. you plan to use this credit card only for emergencies and to pay the credit card balance in full each month. which credit card feature is most important? a. no annual fee b. low apr c. generous rewards program d. no balance transfer fee select the best answer from the choices provided