Final answer:
The mode occurs most often, the median is the middle value, and the mean is the average of a set of data.
Step-by-step explanation:
The mode occurs most often and it represents the value that appears most frequently in a set of data. For example, in the data set {3, 4, 4, 5, 6}, the mode is 4 because it appears twice, which is more than any other number.
The median is the middle value in an ordered list of data. To find the median, you arrange the data in ascending order and then identify the value at the center. For example, in the data set {2, 4, 5, 7, 9}, the median is 5 because it is in the middle.
The mean, also known as the average, is found by adding up all the values in the data set and then dividing by the total number of values. For example, in the data set {3, 6, 9}, the mean is (3 + 6 + 9) ÷ 3 = 6.