Which of the following describes the 'mode' of a set of numbers?

• The middle number when the data is ordered.
• The sum of all the numbers divided by the total count of numbers.
• The number that appears most often in the set.
• The difference between the largest and smallest numbers.

What is the median of the following set of numbers: 10, 5, 12, 8, 5?

• 5
• 8
• 9
• 10

The mode is the number that appears most often in a list.

What is the mean (average) of the numbers 4, 6, and 8?

• 5
• 6
• 7
• 18

What is the mode of the numbers 2, 7, 2, 9, 5, 2, 1?

• 2