Case Processing Summary

	Cases
	Valid		Missing		Total
	N	Percent	N	Percent	N	Percent
Mean time between failures (months)	30	100.0%	0	.0%	30	100.0%

Descriptives

			Statistic	Std. Error
Mean time between failures (months)	Mean		8.78	1.10
	95% Confidence Interval for Mean	Lower Bound	6.53
		Upper Bound	11.04
	5% Trimmed Mean		8.20
	Median		8.29
	Variance		36.34
	Std. Deviation		6.03
	Minimum		1.63
	Maximum		26.47
	Range		24.84
	Interquartile Range		6.03
	Skewness		1.65	.43
	Kurtosis		3.41	.83

Case Processing Summary

	Cases
	Valid		Missing		Total
	N	Percent	N	Percent	N	Percent
mtbf_ln	30	100.0%	0	.0%	30	100.0%

Descriptives

			Statistic	Std. Error
mtbf_ln	Mean		1.95	.13
	95% Confidence Interval for Mean	Lower Bound	1.69
		Upper Bound	2.22
	5% Trimmed Mean		1.96
	Median		2.11
	Variance		.49
	Std. Deviation		.70
	Minimum		.49
	Maximum		3.28
	Range		2.79
	Interquartile Range		.88
	Skewness		-.37	.43
	Kurtosis		.01	.83