Answer:
With no "control" you have no base line to compare your results with, for whatever hypothesis your testing
Explanation:
In 2018, the number of motor vehicle fatalities was 1,922; up 3.6% from 2017 (1,856). The number of serious injuries decreased to 9,494 in 2018; down 6.1% from 2017 (10,107). The number of fatalities per 100,000 population increased slightly to 5.2 in 2018 (from 5.0 in 2017), yet is still the second lowest on record.
