119
Apéndice
En que:
S
xy
= - 0.44
Tabla de resolución de problema
x
y
2
9
-0.3
.09
1.84
3.38
-0.552
5
7
2.7
7.29
-0.16
0.0256
-0.432
1
8
-1.3
2.99
0.84
.7056
-1.92
2
6
- 0.3
.09
- 1.16
1.34
0.348
2
6
- 0.3
.09
- 1.16
1.34
0.348
2
7
- 0.3
.09
- 0.16
.0256
0.0078
suma =
14
suma =
43
Suma=
10.64
Suma =
6.8168
- 2.20
Sustituyendo
S
xy
= - 0.44
S
x
= 2.12
S
y
= 1.36
r
= - 0.044/(2.12)(1.36)
r
= - 0.044/2.89
r = - 0.1522
r
2
= 0.00023
entonces