Mean, Median, Mode & 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 total count of numbers.

Front

What is the median?

Back

The median is the middle number in a sorted list of numbers. If there are two middle numbers, add them together and divide by 2.

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 largest and smallest numbers in a data set.

Front

How do you find the median of a data set?

Back

Sort the numbers from least to greatest and identify the middle number. If there are two middle numbers, add them and divide by 2.

Front

What do you do if the data set has an even number of values when finding the median?

Back

Add the two middle numbers together and divide by 2.

Front

True or False: The median can be affected by extremely high or low values in a data set.

Back

False. The median is not affected by outliers.

Front

How do you calculate 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 6 (the number of values): 36 / 6 = 6.

Front

What is the mode of the data set: 3, 7, 3, 2, 5, 3, 8?

Back

The mode is 3, as it appears most frequently.

Front

If a data set is: 10, 20, 30, 40, 50, what is the range?

Back

The range is 50 - 10 = 40.