Select True or False from each pull-down menu, depending on whether the corresponding statement is true or false.

? True False  1. If the coefficient of correlation $r = \pm 1$, then the best-fit linear equation will actually include all of the data points.

? True False  2. The coefficient of correlation r is a number that indicates the direction and the strength of the relationship between the dependent variable y and the independent variable x.

? True False  3. A straight line that slopes upward and exactly fits all data points would produce a correlation coefficient value of one.

? True False  4. When the standard deviation is expressed as a percentage of the mean, the result is the coefficient of correlation