Effects of Extremes in the Data Set

What is the difference, or range, between the maximum and the minimum values?

• 8

• 7

• 6

• 5

True or false...In the data set, {2, 3, 3, 5, 6, 16}, 16 would be considered an outlier.

• True

• False

The number of books 11 students read during their summer vacation are shown below.
5, 7, 4, 23, 3, 2, 4, 4, 3, 8, 6
Which statement below is true?

• The student who read 2 books caused the data distribution to be skewed left.

• The student who read 2 books caused the data distribution to be skewed right.

• The student who read 23 books caused the data distribution to be skewed to the left.

• The student who read 23 books caused the data distribution to be skewed to the right.

• a

• b

• c

• d

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

• Outlier

• Mean

• Median

• Mode

When my outlier is higher than my other numbers it ​ (a)   my mean.

This means if I remove the outlier from the data set my mean will ​ (b)  

• increases

• decreases

• decrease

• increase

For a particular area, the monthly rainfall totals (in inches) are recorded. Which of the following BEST describes what would happen to the mean if April were removed from the data?

• The mean would decrease

• The mean would increase

• The mean would stay the same

• The mean would become an outlier

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

• outlier

• inlier

• immalier

• sublier

How does the outlier in the data set below effect the mean?

• it increases the mean

• it decreases the mean

• it has no effect on the mean

• there is no outlier

The ______________ can be found by subtracting the lower extreme from the upper extreme.

• Range

• Median

• Mean

• Rate