Mean, Median, Mode

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 calculate the mean of a set of numbers?

Back

To calculate the mean, sum all the numbers in the set and then divide by the number of values in that set.

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

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

Back

To find the median, first arrange the numbers in order. If the count of numbers is odd, the median is the middle number. If even, it 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

How do you find the mode of a set of numbers?

Back

To find the mode, identify the number that occurs most often in the data set. A set may have one mode, more than one mode, or no mode at all.

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?

Back

To calculate the range, subtract the smallest number in the set from the largest number.

Front

What is an example of calculating the mean?

Back

For the numbers 4, 5, 5, 2, 3, 3, 2, 8, the mean is (4+5+5+2+3+3+2+8)/8 = 4.

Front

What is an example of finding the median?

Back

For the numbers 14, 18, 12, 20, 16, first sort them: 12, 14, 16, 18, 20. The median is 16.