Math IA
maxwuxiang
shu_xue_.docThe cornelaton berween two variables is forvnd by
R=
SxSy
Sxy
where Sxy=n
y
y
x
x
)
)(
(
-
-
å
Sx=
n
x
x
2
)
(
-
å
and Sy =n
y
y
2
)
(
-
å
Fron my calwlations Appendx b I fovnd that
4238
85
.
1004
85
.
685
35
.
390
...
85
.
21
65
.
75
65
.
28
)
)(
(
=
+
+
+
+
-
-
=
-
-
å
y
y
x
x
95
.
211
20
4238
)
)(
(
=
=
-
-
å
=
n
y
y
x
x
Sxy
n
x
x
Sx
2
)
(
-
å
=
EMBED Equation.KSEE3 \* MERGEFORMAT
5805
25
.
1482
25
.
462
25
.
342
...
25
.
132
25
.
42
25
.
2
)
(
2
=
+
+
+
+
+
+
=
-
å
x
x
17
20
5805
=
=
Sx
.04
8
.
5067
21
.
681
61
.
1017
21
.
445
...
61
.
3
41
.
146
81
.
364
)
(
2
=
+
+
+
+
+
+
=
-
å
y
y
Sy=
n
y
y
2
)
(
-
å
92
.
15
20
8
.
5067
=
=
Sx
