What is the difference between a pdf and a pmf? O There is no difference- they a

Question

What is the difference between a pdf and a pmf? O There is no difference- they are the same. O You can only get a CDF from a pdf O pdf is for continuous random variables and pmf is for discrete random variables O pdf is for discrete random variables and pmf is for continuous random variables Which of the following is true about CDFs? O You can't derive them, they have to be giver. O They are always complicated mathematical expressions. O Given a continuous CDF, you can derive the pmf. O Given a discrete CDF, you cannot derive the pmf.

Explanation / Answer

pmf is probability mass function and pdf is probability density function. pmf is used for discrete distribution and pdf is used for continuous distribution.

Third option is correct.

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Third option is correct.

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