Answer :
Total number of rolls in the experiment: (10 + 6 + 4 + 8 + 6 + 6) = 40 .
Number of times '1' or '5' came up: (10 + 6) = 16 .
Experimental probability of '1' or '5' : 16/40 = 40%
(Could change, and most likely will, in the next experiment.)
Theoretical probability: 2/6 = 33-1/3 %