Step 1 :First, add up all the numbers: \(10 + 10 + 11 + 12 + 14 + 14 + 14 + 15 + 26 = 116\)
Step 2 :Next, count the total number of numbers, which is 9
Step 3 :Finally, divide the sum by the count to find the mean: \(\frac{116}{9} = 12.89\)
Step 4 :So, the mean is \(\boxed{12.89}\)