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 count of numbers.

Front

What is the median?

Back

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

Front

What is the mode?

Back

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

Front

What is the range?

Back

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

Front

How do you find the mean of the numbers 5, 11, 2, 12, 4, 2?

Back

Add the numbers: 5 + 11 + 2 + 12 + 4 + 2 = 36. Then divide by the count of numbers (6): 36 / 6 = 6.

Front

How do you find the median of the numbers 20, 30, 45, 90, 60, 45, 5, 10, 30, 45, 15, 25?

Back

Sort the numbers: 5, 10, 15, 20, 25, 30, 30, 30, 45, 45, 45, 60, 90. The median is the average of the two middle numbers (25 and 30): (25 + 30) / 2 = 30.

Front

What is an outlier?

Back

An outlier is a value that is significantly higher or lower than the other values in a data set.

Front

How do you find the mode of the numbers 1, 2, 2, 3, 4, 4, 4, 5?

Back

The mode is 4, as it appears most frequently.

Front

What is the median of the numbers 20, 1, 7, 19, 11, 19?

Back

Sort the numbers: 1, 7, 11, 19, 19, 20. The median is the average of the two middle numbers (11 and 19): (11 + 19) / 2 = 15.

Front

How do you calculate the range of the numbers 8, 10, 60, 3, 5, 13, 12, 40, 8?

Back

The highest number is 60 and the lowest is 3. The range is 60 - 3 = 57.