Probability Density Function Flashcards
1
Q
what are the three conditions of a pdf
A
f(x) >= 0
integ from infinity to -infinity, of f(x) dx = 1
F(x) = integ from infinity to -infinity, of f(s) ds
2
Q
differences between PMF and PDF
A
pdf is not a probability, so can be less than 1
pmf is a probability so must equal exactly 1
3
Q
what is pmf
A
probability mass function
