Alarmingly,in some areas where the rate of new cases of AIDS had been declining,it has begun increasing again.The statistic that tells us this information is
A) incidence.
B) correlation.
C) deviation.
D) prevalence.

Question

Quizplus · Accepted Answer

Incidence measures the rate of new cases of a disease or condition in a specific population over a specific period of time. Therefore, if the rate of new cases of AIDS had been declining in a certain area and has now begun to increase again, this suggests an increase in incidence. Correlation, deviation, and prevalence do not directly measure the rate of new cases over a specific period of time.

Alarmingly,in Some Areas Where the Rate of New Cases of AIDS