Final answer:
The increase in females versus males in terms of the number under correctional supervision cannot be answered based on the given information.
Step-by-step explanation:
The question is comparing the increase in females versus males in terms of the number under correctional supervision. According to the information provided, the total number of people under correctional supervision in the United States was approximately 7.3 million in 2007, and around 6.4 million in 2018. While it does not explicitly state the breakdown by gender, it can be inferred that the increase in females would be a part of this total population.
However, to provide a more accurate comparison between males and females, the specific data for each gender would be needed.