The mode of a data set is the most commonly occurring value in the data set. For example, given the data set below:

The most common value is which appears three times, so the mode of the dataset is .

The mean of a data set is the average of all the values in the data set. It is calculated by adding all the numbers in a list and dividing by the count of numbers in the list.

The median of a data set is the middle value of the sorted data.