Which of the following represents the number of patients that respond to the actions of a drug?

A) Frequency distribution curve
B) Median effective dose
C) Dose-effect relationship
D) Median lethal dose

A) Frequency distribution curve
The frequency distribution curve represents the number of patients that respond to the actions of a drug. It represents the number of patients that respond to the actions of a drug at different doses. A few patients are shown to have responded to a medication at very low doses, whereas increasing numbers of patients responded as the dosage was increased.