With respect to the states, the minimum age required to serve as a house representative ranges from 18 to 25, with about half the states requiring a minimum age of 21. Only about a third of the states allow 18-year-olds to serve in the state senate, and 20 have set a minimum age of 25. In five states, the minimum age required to serve as a state senator is 30. For governor, most states require a minimum age of 30. Oklahoma has a minimum age of 31, six states have no age qualification, three allow a minimum age of 18, and six specify a minimum age of 25.Although many states, over the years, have voluntarily changed their age qualification laws to allow more people to run for elective office, court challenges to these statutes have largely failed.
Ceteris paribus is the commonly used Latin phrase meaning 'all other things remaining constant.' When using ceteris paribus in economics, it is often safe to assume that all other variables, except those under immediate consideration, are held constant.
The ceteris paribus rule. Economics is a social science, and, unlike the physical sciences, cannot engage in controlled experimentation to demonstrate how variables are connected. In the real world, economic variables such as price and income, are constantly changing, and this creates a problem in demonstrating the relationship between variables.