, , . . . .
- , , .
, , , , , - . .
. - .
. - ( ) . , - , - , . .
: . , - , . - - ( ). , , .
- x(1), x(2), x(3),..., x(k),..., x(n), x1, x2, x3,..., xn.
( ).
n(x) - , x, F(x) x1, x2, x3,..., xn.
x = [x(1) - x(n)] = [xmin_ - xmax_] , Wn = x(n) - x(1) = xmax_ - xmin_ .
xmin_ = x(1) = min{xk} k=1...n
xmax_ = x(n) = max{xk} k=1...n
.
x(k) k- .
:
Me = x(m), m=(n+1)/2 n,
Me = (x(m)+x(m+1))/2, m=n/2 n.
F(x) x1, x2, x3,..., xn .