Which of the following is always true for all probability density functions of continuous random variables?
A)They are symmetrical.
B) They are bell-shaped.
C) The area under the curve is $1.0$.
D) They have the same height.

Question

Which of the following is always true for all probability density functions of continuous random variables? 
A)They are symmetrical.
B) They are bell-shaped.
C) The area under the curve is $1.0$.
D) They have the same height.

Quizplus · Accepted Answer

The area under the curve of a probability density function must always be equal to 1. However, symmetrical, bell-shaped, and having the same height are not necessarily true for all probability density functions of continuous random variables.

Which of the Following Is Always True for All Probability 1.01.01.0

Which of the Following Is Always True for All Probability $1.0$