Which of the Following Statements Are Not True About the Sample

Multiple Choice

Which of the following statements are not true about the sample correlation coefficient r?

A) The value of r depends on which of the two variables under study is labeled x and which is labeled y.
B) The value of r is independent of the units in which x and y are measure.
C) The value of r is always between -1 and +1, inclusive.
D) The value of r = 1 if all $\left( x _ { i } , y _ { i } \right)$
Pairs lie on a straight line with positive slope.
E) The value of r = -1 if all $\left( x _ { i } , y _ { i } \right)$
Pairs lie on a straight line with negative slope.