How do you find a mode in a even series of numbers?

Mode is the number that appears most often in a set of data.

Examples:

1, 8, 5, 6, 3, 8, 4 Mode: 8 Explanation: There are more 8's in this set of data than any other number.

1, 5, 5, 4, 7, 1 Mode: 5, 1 Explanation: Both 5 and 1 appear in this set of data more than any other number. There can be more than one mode.

1, 6, 3, 8, 0, 12, 7 Mode: None Explanation: All of the numbers appear the same number of times. Sets of numbers don't always have to have a mode.