Balancing short-term costs and long-term benefits: an analysis of the impact of hydroelectric power generation on electricity prices volatility in Cameroon

Sustainable Energy Research

Table 6 Diagnostic tests

	Statistics	Prob	Decision
Breusch–Godfrey LM test	0.174	0.6861	No serial correlation
Breusch–Pagan test for heteroskedasticity	0.87	0.3509	Constant variance
White's test	19.00	0.3918	Homoskedastic
Histogram-normality test	1.567	0.4569	Normally distributed
Cumulative sum test for parameter stability	0.2206	0.9479	Structural break