A probability density function ______.
A)can be graphically represented as a bar graph
B)can be used only to represent variables that are measured on a ratio curve
C)is a smooth curve including all possible values of a continuous variable
D)is always bell-shaped

Question

Quizplus · Accepted Answer

A probability density function (PDF) is a smooth curve that represents the probability distribution of a continuous variable. It can take on any shape, not just a bell-shaped curve, and it includes all possible values of the variable. A bar graph cannot represent a PDF, as it is used for discrete variables. A PDF can be used for variables measured on all types of scales, including interval and ratio scales.

A Probability Density Function ______