Data Sets and Outliers

What are the coordinates of the outlier?

• (9,1)

• (0,3)

• (1,9)

• There is not an outlier.

Identify any outliers on this graph.

• There are no outliers on this graph.

• (6,2)

• (2,6)

• (5,14) and (1,2)

Which trend line is the best model for the data?

• Line A

• Line B

• Line C

• None of the above

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

What is a scatterplot?

Choose the best definition.

• A graph with a bunch of dots.

• A graph that has points plotted that form a linear relationship

• A display of points that shows the relationship between two sets of data.

• A nonlinear graph.

Describe the strength and direction of the trend

• Weak Negative Trend

• Strong Negative Trend

• Weak Positive Trend

• Strong Positive Trend

Describe the strength and direction of the trend

• Weak Negative Trend

• Strong Negative Trend

• Weak Positive Trend

• Strong Positive Trend

Which of the scatter plots below shows a stronger association, and why?

• Scatter plot A; its slope is greater than B.

• Scatter plot A; its points of data are closer together than B.

• Scatter plot B; its slope is positive.

• Scatter plot B; it does not have any data points that are outliers.

Pick the definition of an outlier.

• A value that lies outside of most other values in a data set.

• A value that is the largest.

• A value that is the smallest.

• A value that occurs the most.

If outliers are removed, what changes more significantly the mean or median?

• Mean

• Median