1. Which of the following is used to describe the variety and frequency of past outcomes under similar conditions as a way of predicting what should happen in the future? O A. Statistics O B. Mortality rates O C. Morbidity rates OD. Probabilities 2. Data are used in public health for: O A. assessing the health of the community O B. identifying special risk groups O C. detecting new health threats O D. preparing government budgets O E. all of the above.