front |1 |2 |3 |4 |5 |6 |7 |8 |9 |10 |11 |12 |13 |14 |15 |review |
|
Only used to measure the linear association between two variables. r=1 means that there is 100% association between the values of x1 and x2. What is a good r? As a "rule of thumb" r should be over 0.7 (or 70%). |