Investigating Distribution of Capacity Based on Degradation Model

Table 1

The goodness-of-fit test result for .

Fitted distribution	Parameters		Goodness-of-fit
	Scale parameter	Shape parameter	Chi-square	Degree of freedom	value
Inverse Weibull distribution^a	40.74	21.57	113.46	7
Log-normal distribution function^b	−3.68	0.046	10.61	6
Normal distribution^c	39.86	1.83	10.61	7

^aHypothesis testing is that the reciprocal value distribution is Weibull function; ^bthe hypothesis is that log value distribution is normal distribution; ^cthe hypothesis is that the reciprocal is normal distribution.