Relative risks and absolute risks

Use collected data and calculated probabilities to determine and interpret relative risks and absolute risks, and express in terms of expected frequencies in groups.

e.g. use driving test pass rate data with Instructor A and Instructor B to determine the probability (absolute risk) of passing with A, or determine the relative probability (relative risk) of passing with A compared with B.
Relative risk = (risk of passing with A)/(risk of passing with B)