Mean Median Mode and Range Outliers

The value appearing at the center of a sorted version of a list, or the mean of the two central values.

• Median 

• Range

• Mean

• Mode

Summarizes data using a single number.  The single number is found by finding the sum of the data divided by the number of pieces of data.

• Median 

• Range

• Mean

• Mode

The number(s) or items(s) that appear most often in a set of data.

• Median 

• Range

• Mean

• Mode

The distance between the greatest number and the least number in a set of data.

• Mean 

• Median

• Range

• Mode

Xavier earned the following test scores in math: 95, 90, 100, 85, 80 Ms. Bradley accidentally entered his next test score as 0. Which of these statements are true? Check all that apply.

• Before the error, the mean and the median were both 90.

• Before the error, the mean was 90 and the median was 100.

• The error added an outlier to the data set.

• After the error, the median remained the same.

• The mean was impacted by the error more than the median.

Find the mean, median, and mode(s) of the data with and without the outlier. Which measure did the outlier affect the most?

What is the median of the dataset 100, 102, 99, 101, 103, 450?

• 101.5

• 102

• 100.5

• 103

If you remove the outlier from the dataset 3, 4, 5, 5, 6, 7, 22, what is the new mean?

• 5

• 5.5

• 6

• 4.3

What is the mean of the dataset 8, 9, 10, 10, 11, 12, 50?

• 15.7

• 10

• 14

• 17.1

If you remove the outlier from the dataset 100, 102, 99, 101, 103, 450, what is the new mean?

• 101

• 102.5

• 100.5

• 101.2