A census is an enumeration of a population. The U.S. Census Bureau conducts a census every 10 years, but in addition, the Population Estimates Program of the bureau publishes population estimates for incorporated places every year. According to 2007 estimates, the five largest U.S. cities (by population) are New York City, Los Angeles, Chicago, Houston, and Phoenix. Consider a data set consisting of all the residents of these five cities. The values of the variable named City are Chicago, Houston, Phoenix, Los Angeles, and New York City, so City is a nominal variable with five classes. Frequency distributions are provided in the table below, but the table is incomplete. Use the dropdown menus to complete the table. Table 1 Frequency City (Millions of people) Percent Frequency Chicago 2.84 15.2% Houston 2.21 Phoenix 8.3% Los Angeles 3.83 20.5% New York City 8.27 44.2% Total 18.70 The U.S. population is about 300 million. The frequency of Chicago residents in the U.S. population is about people. The percent frequency of Chicago residents in the U.S. population is about