Table 3.

Average of user responses to 4 most important usability questions for various user groups

Question	ALL users (13)	FEATURE and RF NON-experts (4)	FEATURE experts and RF NON-experts (3)	FEATURE NON-experts and RF experts (2)	FEATURE and RF experts (4)
Estimate your increase in confidence of RF classification of FEATURE data after using RFEX summaries	2.7 (SD 2.2)	2.5	2	0.5	4.5
Estimate your increase in understanding why and how RF works on FEATURE data (e.g. RF Explainability) using RFEX one page summaries	3.3 (SD 1.7)	3.25	3.7	1	4.25
I believe RFEX approach will be useful for other applications of RF	4.4 (SD 0.5)	4.5	4.3	4	4.5
I believe RFEX approach (or its modifications) will be useful for other machine learning methods	4.0 (SD 0.8)	4.5	3.3	3.5	4.25