The Comparison of Grey System and the Verhulst Model for Rainfall and Water in Dam Prediction

Table 1

The standard levels of MAPE (%) model evaluation [12].

Rank	Precision level	Meaning of forecast
A	Less than 0.1	High accurate predictability
B	0.1-0.2	Good predictability
C	0.2−0.5	Reasonable predictability
D	More than 0.5	Inaccurate predictability