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 X x
P (X = x) Px
x
Px
F (x) = P (X d" x) = Pi
i"X
id"x
 f(x)
x
F (x) = P (X d" x) = f(t) dt
-"
F (x) = P (X < x)
F (x) = P (X d" x) F (x) = P (X < x)
F(x) " 0, 1
lim F(x) = 0 lim F(x) = 1
x-" x+"
P (X < x) = lim F (x0) P (X d" x) = lim F (x0)
x0x- x0x+
P (X > x) = 1 - F (x) P (X e" x) = 1 - F (x)
P (X = x) = F (x) - lim F (x0) P (X = x) = lim F (x0) - F (x)
x0x- x0x+
P (a < x d" b) = F (b) - F (a) P (a d" x < b) = F (b) - F (a)