Final answer:
It is false that over 50 percent of legislators in both the House and Senate have graduate degrees; reference information only confirms that a majority have at least a bachelor's degree.
Step-by-step explanation:
According to the reference information, the statement that over 50 percent of legislators in both the House and Senate have graduate degrees is false. The data specifies that while 95 percent of members of the House and 100 percent of Senate members have a bachelor's degree, it does not confirm that over 50 percent have graduate degrees. It's also worth noting that the broader context provided indicates a high level of education among Congress members compared to the general population, since fewer than 40 percent of U.S. adults have even an associate's degree.