After re-ordering, we can see that both 2 and 6 shows up 4 times, two more than the next numbers that have the next largest amount of numbers (1, 4 and 8, each having 2 numbers)
However, now you are adding another 6 into the set.
Explanation: Mode is the number or numbers that appear the most. Before you added an extra 6, the mode was 2 & 6 because there was 4 2's & 4 6's but when you added another 6, the mode changed to 6 because the 6 appeared 5 times.
First you must add up all of the numbers. Then divide the sum by the number of students in the class. You will get 2.65 as your answer. Then round to the nearest number. Your final answer is 3.