Operation Manual

B: Informações Adicionais sobre Cálculos 141
Estatísticas
 


[
[
∑
Q
-------=
y
y
∑
Q
-------=
[
[\
∑
\
∑
----------=
Sx
[
∑
[
∑
()
2
Q
--------------–
Q 
–
-------------------------------=
Sy
y
∑
y
∑
()
2
Q
--------------–
Q 
–
------------------------------=
σx
[
∑
[
∑
()
2
Q
--------------–
Q
-------------------------------=
σy
y
∑
y
∑
()
2
Q
--------------–
Q
------------------------------=
r
xy
∑
x
∑
y
∑
n
---------------–
x
2
∑
x
∑
()
2
n
--------------–


y
2
∑
y
∑
()
2
n
--------------–


----------------------------------------------------------------------------=
m
xy
∑
x
∑
y
∑
n
---------------–
x
2
∑
x
∑
()
2
n
--------------–
--------------------------------=
bymx–=
x
ˆ
yb–
m
-----------= y
ˆ
mx b+=
appendix_B.fm Page 141 Sunday, June 25, 2000 2:39 PM