Mean, Median, Mode and 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 number of items.

Front

How do you find the median in a set of numbers?

Back

To find the median, arrange the numbers in order and identify the middle number. If there are two middle numbers, add them together and divide by two.

Front

What is the mode?

Back

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

Front

Can a data set have more than one mode?

Back

Yes, a data set can have more than one mode if multiple numbers appear with the same highest frequency.

Front

What is the range of a set of numbers?

Back

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

Front

How do you calculate the mean of these numbers: 5, 10, 15?

Back

Add the numbers (5 + 10 + 15 = 30) and divide by the number of items (3). Mean = 30 / 3 = 10.

Front

Find the median of these numbers: 8, 3, 5, 7, 2.

Back

First, arrange the numbers in order: 2, 3, 5, 7, 8. The median is 5.

Front

What is the mode of the following numbers: 1, 2, 2, 3, 4?

Back

The mode is 2, as it appears most frequently.

Front

If a data set has no repeating numbers, what is the mode?

Back

If there are no repeating numbers, the data set has no mode.

Front

How do you find the range of these numbers: 12, 5, 8, 20?

Back

The range is the largest number (20) minus the smallest number (5). Range = 20 - 5 = 15.