If a family of two is making a household income of $100,000 in New York City, they would be considered middle class, along with 48 percent of adults in the same area, but if that same couple lived in ...

Americans can calculate if they are lower, middle or upper class by using Pew Research Center’s updated calculator. The interactive asks for state, metropolitan area, household income before taxes and ...

When class widths are not equally sized, they are called unequal class intervals. The area of the bar represents the frequency, so to find the height of the bar, divide frequency by the class width.