Which of the following are continuous random variables?
I. The weight of an elephant
II. The time to answer a questionnaire
III. The number of floors in a skyscraper
IV. The square feet of countertop in a kitchen
A) I and II only
B) III and IV only
C) I, II and IV only
D) I, II, II, and IV

Question

Which of the following are continuous random variables?​ 
I. The weight of an elephant
II. The time to answer a questionnaire
III. The number of floors in a skyscraper
IV. The square feet of countertop in a kitchen
A) ​I and II only
B) ​III and IV only
C) ​I, II and IV only​
D) ​I, II, II, and IV

Quizplus · Accepted Answer

I. Weight of an elephant can take any value between certain range and can be measured accurately to smaller units, hence it is a continuous random variable.
II. Time to answer a questionnaire can also take any value between certain range and can be measured accurately to smaller units, hence it is a continuous random variable.
III. Number of floors in a skyscraper can only take discrete values and cannot be measured accurately to smaller units, hence it is a discrete random variable.
IV. Square feet of countertop in a kitchen can take any value between certain range and can be measured accurately to smaller units, hence it is a continuous random variable.

Which of the Following Are Continuous Random Variables?​

Which of the Following Are Continuous Random Variables?