Mean, Median, Mode, Range

Front

What is the mean?

Back

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.

Front

How do you find the mean of these numbers: 4, 2, 5, 6, 3?

Back

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

Front

What is the mode?

Back

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

Front

What is the mode in this set of numbers: 7, 14, 20, 3, 7, 14, 2, 14, 7?

Back

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

Front

What is the median?

Back

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

Front

What is the median of these numbers: 5, 22, 81, 16, 15, 22?

Back

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.

Front

How do you find the range?

Back

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

Front

What is the range of these numbers: 4, 2, 5, 6, 3?

Back

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

Front

What does it mean if a set of numbers has no mode?

Back

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

Front

What is an example of a set with no mode?

Back

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