States that only require one license plate:
States that require both plates:
Missouri
Washington
Oregon
California
Alaska
Hawaii
Nevada
Idaho
Montana
Wyoming
Colorado
Utah
North Dakota
South Dakota
Nebraska
Texas
Minnesota
Iowa
Illinois
Wisconsin
Ohio
Virginia
New York
Maryland
New Jersey
Connecticut
New Hampshire
Vermont
Maine
Rhode Island
Washington D.C
Our Project Question: What percent of cars surveyed will only have one license plate?
Hypothesis: More cars will have two license plate than just one. Statistics Ohio-
Chelsea's data(Engles Corner)
One Plate:23 cars with only one plate.
Two Plates:77 cars with two plates.
My data(Monroe)
One plate: 14 cars with only one plate.
Two Plates:86 cars with two plates.
Kaitlin's Data(Mason)
Two Plates: 73 cars had two license plates.
One Plate: 27 cars had only one plate.
Rachael's Data (Cinn.)
Two Plates: 83 cars had two license plates.
One Plate: 17 cars had one license plate
Results
Answer:
20.25% of cars surveyed only had one license plate
Variable: Location
Control: Krogers, not Kroger Market Places
Set-up: We will go to various Krogers in the surrounding areas and record the number of cars with two license plates, as well as those with only one. Data will be collected at various times, separately by each group member.
Charts
Percent of cars at each Krogers with one license plate:

Conclusion
Our hypothesis was correct. More cars has two license plates
than one.
Kansas
Arizona
New Mexico
Louisiana
Mississippi
Alabama
Tennessee
Kentucky
Indiana
West Virginia
Pennsylvania
North Carolina
South Carolina
Georgia
Florida
Delaware