The table shows the results of rolling a number cube, with sides labeled 1 through 6, several times.

What is the experimental probability of rolling a 1 or a 5?

Express your answer in simplest form.

Outcome 1 2 3 4 5 6

Number of times outcome occurred 10 6 4 8 6 6

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 %

Determine how many times the dice was rolled:

10+6+4+8+6+6 = 40

Determine how many times 1 through 5 was rolled:

10+6+4+8+6 = 34

Determine the percentage by dividing the number of times 1 through 5 was rollen by the total number of times the dice was rolled:

34/40 = 17 in 20 = 85% chance