How does a probability mass function differ from a probability density function?
- A probability mass function is used for continuous random variables, while a probability density function is used for discrete random variables
- A probability mass function is used for discrete random variables, while a probability density function is used for continuous random variables
- The two terms are interchangeable
- There is no difference between a probability mass function and a probability density function
A probability mass function is used for discrete random variables and gives the probability that a discrete random variable is exactly equal to some value. A probability density function, on the other hand, is used for continuous random variables and gives the density of the variable at a particular value.
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