Effects of Extremes in the Data

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

• outlier

• inlier

• immalier

• sublier

The ages of nine employees at a company are shown below.
45, 50, 52, 58, 63, 63, 41, 58, 49
The company hires a tenth employee who is 28 years old. What effect does the new employee have on the shape of the data distribution?

• The new employee causes the distribution to become skewed to the right.

• The new employee causes the distribution to be skewed to the left.

• The new employee causes the distribution to become more symmetrical.

• The new employee causes the distribution to become less spread out.

What measure of central tendency (mean, median or mode) would be best for the following set of data?

• Mode, because it is the one that shows up the most.

• Median, because there is an outlier.

• Mean, because there is not an outlier.

• There is not a best measure of central tendency for this data.

Data points that are far away from most other points

• Cluster

• Outlier

• Correlation

• Scatter Plot

What is upper extreme of the data below?

• 18

• 19

• 19.5

• 20

How do you identify an outlier in a scatter plot?

• A point that lies on the line of best fit

• A point that is closer to the y-axis

• A point that is far removed from the cluster of other data points

• A point that is closest to the x-axis

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

• 8

• 7

• 6

• 5

What is the minimum value?

• 64

• 58

• 66

• 60

Is there an outlier?

• No.

• Yes, it is 6.

• Yes, it is 4-5

• Yes, it is 1-3.