The Following Is a Scatterplot of a Company's Profits Versus

question 15

Multiple Choice

The following is a scatterplot of a company's profits versus their sales (in dollars) . Each point on the plot represents profits and sales during one of the months in the sample. What should you do about the two points that represent profits for sales of $20K or more?

• A)The two points are clearly outliers and should be eliminated from the data set prior to analysis.
• B)The two points are clearly outliers, and the point in the far upper right should be eliminated from the data set prior to analysis because it is such an extreme outlier.
• C)The two points may or may not be outliers, but they are definitely influential points. Prior to analysis, the data should be inspected (if possible)to validate that these points are accurate and are not the result of faulty data entry or other issues.
• D)There is no need to do anything prior to analysis-all data points are equally valid and cannot simply be eliminated.

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Definitions:

Anterior Chambers

The fluid-filled space between the cornea and the iris in the eye, through which light passes to reach the lens.

Ciliary Body

A structure in the eye composed of ciliary muscle and ciliary processes, involved in the production of aqueous humor and adjustment of the lens for focusing.

Pupil

The opening in the center of the iris of the eye that allows light to enter the retina.

Special Senses

The senses including vision, hearing, taste, smell, and equilibrium, which have specialized organs devoted to them.