14
C
* $
"%' (
$
! $
!
,
" 41
"
(
* $
I
),
!
% 90% '
& * $
$ !
" " *
5%
$
.
2
" $
! *
!
!
$
!
$
, !* "
,
"
"
*
"%
(
. :"*
"%
(
)
"
!
$ "
"%$
"
%
"
! )
I
± y, ( I-
)
; y –
"
, (2"
. ., 2000),
"*
$"
*" %
. :"*
"
(
$!
$ !
& (
"% !
,
!
!
$ "*
"
* !
*$ !
"%$
" *
1 "
– W
(
(
–
! 1 2 " 2 3 "
"%
) / " -1
"" –
(
(
– 1, 2 3 "
"%
).
"
*
$
! !
"%$
" *
I -1
(U). 5
$
,
$
" $
<0,05.
! " *
H))
"*
(
B
(})
(
(C
R.C., 1990; #" B., 1999; "
. ., 2001).
:"* ("*
' ! !
"%$
! " (2"
. ., 2000).
%
$
$
, $
!
"
! ( !'
!
!
$ " ),
!" $
!
"
"
,
, 25%, 50%
75% "*. 2 H
$
* 25%-(
75%-(
"*
* $ *
& (
(
"*, 50%- "% * "* *
.
"%
(
" " & 50%
"
! ( " $
"%
) $
.
:"*
*
( )
"%$
Microsoft Excel-2003 "*
!