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Table 3 Results of statistical tests at the significance level α = 0.05

From: Piecewise modelling and parameter estimation of repairable system failure rate

Test methods Statistics Critical value Calculated value Results
Laplace test U 1.96 1.35 Show a non-monotonic trend
Anderson–Darling test V 1 1.96 3.32 Follow the trend of bathtub curve
V 2 1.96 4.08
V 3 192.47 68.65