, .
().
1 () , (= ).
2 () , 2 . . , ( ), , .
N/2 , (N+1)/2
3
X=(X1+X2+X3+Xn)/N
<+> <> 0.
, 1 .
4
, , .
=(1n1+x2n2+x(n)n(n))/N x1n1+y2n2
5 , . : , .
, ,
.
.
(, ) .
1. . (Xmin, Xmax)
2. R=Xmax-Xmin
3. Di=Xi-
4. , .
-
-
30, ( )
N-1 . 1 ,
5. ( ) . , , S= . , .
6. - , V=(S/X)100%
> 50%, ( 20%)