Data on the gasoline tax per gallon in cents as of a certain date for the US states and the District of Columbia are shown below.

State Gasoline Tax

per Gallon State Gasoline Tax

per Gallon

Alabama Missouri

Alaska Montana

Arizona Nebraska

Arkansas Nevada

California New Hampshire

Colorado New Jersey

Connecticut New Mexico

Delaware New York

District of

Columbia North Carolina

North Dakota

Florida Ohio

Georgia Oklahoma

Hawaii Oregon

Idaho Pennsylvania

Illinois Rhode Island

Indiana South Carolina

Iowa South Dakota

Kansas Tennessee

Kentucky Texas

Louisiana Utah

Maine Vermont

Maryland Virginia

Massachusetts Washington

Michigan West Virginia

Minnesota Wisconsin

Mississippi Wyoming

A button hyperlink to the SALT program that reads: Use SALT.

a

The smallest value in the data set is Alaska and the largest value is Pennsylvania Are these values outliers?

Pennsylvania is an outlier, but Alaska is not.

Alaska and Pennsylvania are both outliers.

Alaska is an outlier, but Pennsylvania is not.

Neither Alaska nor Pennsylvania are outliers.

How do you know if they are outliers?

To be an outlier, an observation has to be greater than

or less than

b

Construct a boxplot of the data set.

The boxandwhisker plot has a vertical axis numbered from to The boxandwhisker is also vertical. The bottom whisker is approximately the bottom edge of the box is approximately the line inside the box is approximately the top edge of the box is approximately and the top whisker is approximately There is one outlier located at The boxandwhisker plot has a vertical axis numbered from to The boxandwhisker is also vertical. The bottom whisker is approximately the bottom edge of the box is approximately the line inside the box is approximately the top edge of the box is approximately and the top whisker is approximately There is one outlier located at The boxandwhisker plot has a vertical axis numbered from to The boxandwhisker is also vertical. The bottom whisker is approximately the bottom edge of the box is approximately the line inside the box is approximately the top edge of the box is approximately and the top whisker is approximately The boxandwhisker plot has a vertical axis numbered from to The boxandwhisker is also vertical. The bottom whisker is approximately the bottom edge of the box is approximately the line inside the box is approximately the top edge of the box is approximately and the top whisker is approximately There are outliers located at and

Comment on the interesting features of the plot. Round numerical answers to the nearest cent.

The boxplot shows that a typical gasoline tax is around

cents per gallon, that the middle of gasoline taxes lie between and

cents per gallon, and that the distribution is

Select

There

Select

outliers in the distribution.