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 9, 12, 12?

Back

Add the numbers: 9 + 12 + 12 = 33. Then divide by the count of numbers: 33 ÷ 3 = 11.

Front

What is the median of a data set?

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 3, 17, 17, 11, 8, 13, 5, 18?

Back

First, sort the numbers: 3, 5, 8, 11, 13, 17, 17, 18. There are 8 numbers, so the median is the average of the 4th and 5th numbers: (11 + 13) ÷ 2 = 12.

Front

What is the mode of a data set?

Back

The mode is the number that appears most frequently in a data set. A set can have one mode, more than one mode, or no mode at all.

Front

Can a data set have more than one mode?

Back

Yes, a data set can have multiple modes if two or more 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 highest and lowest values in a data set.

Front

How do you calculate the range of 3, 7, 2, 9?

Back

Subtract the smallest number from the largest: 9 - 2 = 7.

Front

What is the mean of 8, 12, 15, 10, 5?

Back

Add the numbers: 8 + 12 + 15 + 10 + 5 = 50. Then divide by the count of numbers: 50 ÷ 5 = 10.

Front

What is the mean of 3, 3, 4, 5, 6, 7, 7?

Back

Add the numbers: 3 + 3 + 4 + 5 + 6 + 7 + 7 = 35. Then divide by the count of numbers: 35 ÷ 7 = 5.