An Optimization-Based Approach to Calculate Confidence Interval on Mean Value with Interval Data

Table 3

Comparison of confidence bounds on the mean.

Example	Proposed approaches		Ferson et al. [3]
	Independent moments	Dependent moments	Normal (UCLs)	Distribution free
1	[4.6936, 7.0766]	[5.0004, 6.7671]	—	—
2	[2.0013, 9.9159]	[2.8281, 9.1108]	[5.958, 8.863]	[1.706, 13.787]
3	[4.0351, 9.8494]	[4.4489, 9.4540]	—	—
4	[1.8780, 9.2973]	[2.0914, 9.0655]	[8.070, 8.613]	[1.160, 14.694]