Find the value of the linear correlation coefficient r.
3) Two separate tests are designed to measure a student's ability to solve problems. Several students 3) are randomly selected to take both tests and the results are shown below.
Test A 48 52 58 44 43 43 40 51 59
TestB 73 67 73 59 58 56 58 64 74
A) 0.548 B) 0.867 C) 0.109 D) 0.714
