Which of the following is not always true of the correlation coefficient r for variables x and y? m
1.) An r = 0 indicates no correlation between x and y.
2.) If r is positive, the slope of the least-square regression line is positive.
3.) r is between -1 and 1, inclusive.
4.)If the units of either x or y were changed, r would remain the same.
5.) Anr = 11 implies perfect linear correlation between x and y.