Mean, Median, Mode, Range

The mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the total count of numbers.

Add the numbers: 4 + 2 + 5 + 6 + 3 = 20. Then divide by the count of numbers (5): 20 ÷ 5 = 4.

The mode is the number that appears most frequently in a set of numbers.

The mode is 7 and 14, as both appear most frequently.

The median is the middle number in a sorted list of numbers.

First, sort the numbers: 5, 15, 16, 22, 22, 81. The median is the average of the two middle numbers (16 and 22): (16 + 22) ÷ 2 = 19.

The range is the difference between the largest and smallest numbers in a set.

The largest number is 6 and the smallest is 2. The range is 6 - 2 = 4.

It means that no number appears more than once in the set.

The set {1, 2, 3, 4} has no mode because all numbers appear only once.