Mean, Median, Mode and Range

Front

What is the mean of a set of numbers?

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 calculate the mean of these numbers: 9, 8, 12, 6, 10?

Back

Add the numbers: 9 + 8 + 12 + 6 + 10 = 45. Then divide by 5 (the count of numbers): 45 ÷ 5 = 9.

Front

What is the median of a set of numbers?

Back

The median is the middle number in a sorted list of numbers. If there is an even number of values, the median is the average of the two middle numbers.

Front

How do you find the median of these numbers: 12, 5, 9, 18, 22, 25, 5?

Back

First, sort the numbers: 5, 5, 9, 12, 18, 22, 25. The median is 12, the middle number.

Front

What is the mode of a set of numbers?

Back

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

Front

How do you find the mode of these numbers: 12, 5, 9, 18, 22, 25, 5?

Back

The mode is 5, as it appears most frequently.

Front

What is the range of a set of numbers?

Back

The range is the difference between the highest and lowest numbers in a set.

Front

How do you find the range of these numbers: 12, 5, 9, 18, 22, 25, 5?

Back

The highest number is 25 and the lowest is 5. Range = 25 - 5 = 20.

Front

What is the range of the heights: 158cm, 172cm, 164cm, 164cm, 167cm, 159cm?

Back

The highest height is 172cm and the lowest is 158cm. Range = 172 - 158 = 14cm.

Front

What is the first step to find the mean?

Back

Add all the numbers together.