Below Is a Description of a Research Situation Encountered in the Social

Short Answer

Below is a description of a research situation encountered in the social sciences. Based on the information provided, indicate the appropriate statistical procedure for testing the significance of differences or strength of correlation.
To investigate the validity of a particular academic test, researchers give the test to 20 college sophomores whose academic ability has been previously ranked by their professor.
The heading for the table of results looks like the following:
etc.
Which statistical procedure would one apply to determine the association between academic scores and students' rankings by their professor?