Table 3. The Example of calculating the chi-square statistic.

Class	Expected ratio	Expected (Ej)	Observed (Oj)	(Oj – Ej)2	(Oj – Ej)2/Ej	χ2
Forest land	0.7442	101.96	104.00	4.18	0.04	2.84
Cropland	0.0595	8.15	7.00	1.33	0.16
Grassland	0.0814	11.15	14.00	8.11	0.73
Wetlands	0.0574	7.86	8.00	0.02	0.00
Settlements	0.0575	7.88	4.00	15.04	1.91