χ
2
=
Σ
(
Σ
O
j
t
−
Σ
E
j
t
)
2
Σ
E
j
t
=
(
4
−
2.890
)
2
2.890
+
(
3
−
4.110
)
2
4.110
=
0.426
+
0.300
=
0.726
Description:
Math equation.