User-Centric Design for Mathematical Web Services

Table 3

Percentage analysis.

Questions	Excellent		Very Good		Satisfactory		Very Poor		Unacceptable
	MATWS	AEPLT	MATWS	AEPLT	MATWS	AEPLT	MATWS	AEPLT	MATWS	AEPLT
Easy to use
Number	7	3	8	5	5	9	0	2	0	1
%	35	15	40	25	25	45	0	10	0	5
Buttons access
Number	10	1	9	2	1	10	0	5	0	2
%	50	5	45	10	5	50	0	25	0	10
Efficiency
Number	7	4	9	8	4	5	0	2	0	1
%	35	20	45	40	20	25	0	10	0	5
Visual appearance
Number	11	2	7	2	2	10	0	4	0	2
%	55	10	35	10	10	50	0	20	0	10
Easy recovery from errors
Number	10	2	7	4	3	9	0	3	0	2
%	50	10	35	20	15	45	0	15	0	10