Outliers Mean and Median

Gabriella’s quiz grades are 88, 92, 92, 96, 98. Gabriella scored a 20 on her sixth quiz. What effect does this score have?

• The low score causes the median to increase.

• The low score causes the median to decrease.

• The low score causes the mean to increase.

• The low score causes the mean to decrease.

Find the Mean of the following data points.

• 30

• 28

• 26.8

• 27.9

What is the median of the data set?

• 6

• 7

• 5.5

• 9

Another name for the "mean"

• Middle number

• Average

• Number that repeats the most

• Rude

If my data set had an outlier that was quite a bit more than the other numbers in my data set, what would it do to my average

• leave it the same

• increase the average

• decrease the average

When finding the median, what do you do if there are two middle numbers?

• Add them together and divide by 2

• Write them both as the answer

• Give up

• Pick one

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

Numbers that are used to describe the center of a set of data.  These measures include the mean, median, and mode.

• Interquartile Range

• Measure of Variation

• Measure of Center

• Interval

A value that is much higher or much lower than the other values in a set of data.

• Outlier

• Box Plot

• Range

• Histogram